# How do you solve #4x^2 -18=82# graphically and algebraically?

##### 1 Answer

Sep 11, 2017

#### Answer:

By arranging the original equation

#### Explanation:

Your equation can be written

The solution for x is

Graphically the solution is provided below

When y is zero, you can find x (-5 and +5)

graph{(x^2)-25 [-10, 10, -30, 20]}