Question

X2 + 12 = 48
A. 36, -36
B. 6,-6
C. 18,-18

Answer 1

B. 6,-6

Explanation:

X^2 + 12 = 48

Subtract 12 from each side

X^2 + 12-12 = 48-12

X^2 = 36

Take the square root of each side

sqrt(X^2 ) = sqrt(36)

X = ±6