Question

Solve the quadratic equation for x. What is one of the roots?

(x + 6)2 = 49

A) −13
B) −6
C) −7
D) −1

Answer 1

A) −13

Explanation:

(x + 6)^2 = 49

Take the square root of each side

sqrt((x + 6)^2) = ±sqrt(49)

x+6 = ±7

Subtract 6 from each side

x+6-6 = -6 ±7

x =-6 ±7

Separating into 2 parts

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

x = 1 x = -13