Question

Given (x – 7)2 = 36, select the values of x.

x = 13

x = 1

x = –29

x = 42

Answer 1

x=1,13

Explanation:

(x – 7)^2 = 36

Take the square root of each side

sqrt((x – 7)^2) = sqrt(36)

x-7 = ±6

x-7 = 6 x-7 =-6

Add 7 to all sides

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

x = 13 x=1