# Prove that x 2 + 8x + 20 > 4 for all values of x.

## Question:

Prove that x^{2} + 8x + 20 > 4 for all values of x.

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**Related Book For**

## Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

**ISBN:** 9781292183398

1st Edition

**Authors:** Greg Attwood

**Question Details**

Chapter #

**7**Section: Exercise 7D

Problem: 11

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**Question Posted:**July 14, 2023 23:51:17