Question

Explain why the equation (x-4)2-28=8

Answer 1

x=10 or x=-2

Explanation:

add 28 to both sides

(x-4)^2=36

sqrt both sides

remember to get positive and negative roots

x-4=+/-6

add 4 to both sides

x=4+/-6

x=4+6 or x=4-6