Question

If `x^2=4(5-1)` what is the value of x?

Answer 1

This equation has 2 solutions: `x=-4 vv x=4`

Explanation:

`x^2=4(5-1)` First we have to multiply the right side.

`x^2=4*4`

`x^2=16` Now we can take a square root of both sides remembering that `sqrt(x^2)=|x|`

`|x|=4`

`x=-4 vv x=4`