Question

Given (x – 7)2 = 36, select the values of x. x = 13 x = 1 x = –29 x = 42

Answer 1

x=13, x=1

Explanation:

(x – 7)^2 = 36

Take the square root of each side

sqrt((x – 7)^2) = sqrt(36)

x-7 = ±6

Separate into two equations

x-7 = 6 x-7=-6

Add 7 to each side

x-7+7=6+7 x-7+7 = -6+7

x=13 x=1