# How do you solve #x^2 - 49 = 0 #?

##### 1 Answer

Mar 17, 2016

#### Explanation:

You could use several methods.

The fastest is:

I'd prefer to factorize the equation using the Square Difference Identitiy:

to rewrite the second degree equation as product of first degree equation.

In your exercise:

A product is zero when the factors are zero

Therefore: