# How do you solve #x^2-4<=0#?

##### 1 Answer

Aug 30, 2016

#### Explanation:

Write as a quadratic equation and solve, and then select test points.

Usually, we choose one point inside the parabola and another outside

The x-intercepts of the parabola are

**Test point 1: #x = -4#**

Hence, by deduction, the interval of solution is

Hopefully this helps!