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MatemáticasMatemáticas18 views·Updated Jun 25, 2026·2 pages

Resolviendo Inecuaciones Cuadráticas y Racionales

Z
zN3xtunee_ @z3xtunee__z314grdmka

Las inecuaciones cuadráticas son fundamentales en cálculo y te van...

1
of 2
# Inecuaciones, Cuadraticas

e Inecuaciones raciona-
les

Guia #6

Cálculo

Actividad

a. x²+2x-15>0

X²+2x-150×15×3

(x-3)(x+5)=0

X-3=0
X=

Resolviendo Inecuaciones Cuadráticas Básicas

¿Alguna vez te has preguntado qué pasa cuando una ecuación cuadrática se convierte en desigualdad? La clave está en factorizar primero y luego analizar los signos en cada intervalo.

Para resolver x² + 2x - 15 > 0, primero factorizas: x3x - 3x+5x + 5 = 0. Esto te da los puntos críticos x = 3 y x = -5. Estos puntos dividen la recta numérica en tres intervalos.

El truco está en probar el signo de la expresión en cada intervalo. Cuando x < -5 o x > 3, la expresión es positiva, así que la solución es x ∈ (-∞, -5) ∪ (3, ∞).

💡 Tip clave: Los puntos donde la expresión se hace cero dividen la recta en intervalos donde el signo se mantiene constante.

2
of 2
# Inecuaciones, Cuadraticas

e Inecuaciones raciona-
les

Guia #6

Cálculo

Actividad

a. x²+2x-15>0

X²+2x-150×15×3

(x-3)(x+5)=0

X-3=0
X=

Casos Especiales y Inecuaciones con ≤ y ≥

Cuando trabajas con ≤ o ≥, los puntos críticos también forman parte de la solución. Por ejemplo, en x² + 3x + 2 ≤ 0, factorizas como x+1x + 1x+2x + 2 = 0 y obtienes x = -1 y x = -2.

La diferencia es que ahora incluyes estos valores en tu respuesta. La expresión es negativa entre -2 y -1, entonces la solución es [-2, -1] usando corchetes para mostrar que los extremos están incluidos.

Para casos como 2x² - x - 1 ≤ 0, factorizas como 2x+12x + 1x1x - 1 = 0 y obtienes x = -1/2 y x = 1. La solución final es -1/2 ≤ x ≤ 1.

⚠️ Importante: Siempre verifica tus intervalos probando un punto dentro de cada región para confirmar el signo.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

Where can I download the Knowunity app?

You can download the app in the Google Play Store and in the Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content: Solution of Inequality

6

Most popular content in Matemáticas

9

Most popular content

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Can't find what you're looking for? Explore other subjects.

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4.6/5App Store
4.7/5Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan SiOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha KlichAndroid user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

AnnaiOS user

MatemáticasMatemáticas18 views·Updated Jun 25, 2026·2 pages

Resolviendo Inecuaciones Cuadráticas y Racionales

Z
zN3xtunee_ @z3xtunee__z314grdmka

Las inecuaciones cuadráticas son fundamentales en cálculo y te van a servir mucho para resolver problemas complejos. Básicamente, es como resolver ecuaciones cuadrática, pero en lugar de buscar valores exactos, encuentras rangos de valores que hacen verdadera la desigualdad.

1
of 2
# Inecuaciones, Cuadraticas

e Inecuaciones raciona-
les

Guia #6

Cálculo

Actividad

a. x²+2x-15>0

X²+2x-150×15×3

(x-3)(x+5)=0

X-3=0
X=

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

Resolviendo Inecuaciones Cuadráticas Básicas

¿Alguna vez te has preguntado qué pasa cuando una ecuación cuadrática se convierte en desigualdad? La clave está en factorizar primero y luego analizar los signos en cada intervalo.

Para resolver x² + 2x - 15 > 0, primero factorizas: x3x - 3x+5x + 5 = 0. Esto te da los puntos críticos x = 3 y x = -5. Estos puntos dividen la recta numérica en tres intervalos.

El truco está en probar el signo de la expresión en cada intervalo. Cuando x < -5 o x > 3, la expresión es positiva, así que la solución es x ∈ (-∞, -5) ∪ (3, ∞).

💡 Tip clave: Los puntos donde la expresión se hace cero dividen la recta en intervalos donde el signo se mantiene constante.

2
of 2
# Inecuaciones, Cuadraticas

e Inecuaciones raciona-
les

Guia #6

Cálculo

Actividad

a. x²+2x-15>0

X²+2x-150×15×3

(x-3)(x+5)=0

X-3=0
X=

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

Casos Especiales y Inecuaciones con ≤ y ≥

Cuando trabajas con ≤ o ≥, los puntos críticos también forman parte de la solución. Por ejemplo, en x² + 3x + 2 ≤ 0, factorizas como x+1x + 1x+2x + 2 = 0 y obtienes x = -1 y x = -2.

La diferencia es que ahora incluyes estos valores en tu respuesta. La expresión es negativa entre -2 y -1, entonces la solución es [-2, -1] usando corchetes para mostrar que los extremos están incluidos.

Para casos como 2x² - x - 1 ≤ 0, factorizas como 2x+12x + 1x1x - 1 = 0 y obtienes x = -1/2 y x = 1. La solución final es -1/2 ≤ x ≤ 1.

⚠️ Importante: Siempre verifica tus intervalos probando un punto dentro de cada región para confirmar el signo.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

Where can I download the Knowunity app?

You can download the app in the Google Play Store and in the Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content: Solution of Inequality

6

Most popular content in Matemáticas

9

Most popular content

9

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5App Store
4.7/5Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan SiOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha KlichAndroid user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

AnnaiOS user