Solve for x in the equation x^2+10x+12=36.

A. x = - 12 or x = 2

B. x = - 11 or x = 1

C. x = - 2 or x = 12

D. x = - 1 or x = 11

Solve for x:

x^2 + 10 x + 12 = 36

36 = 36:

x^2 + 10 x + 12 = 36

Subtract 12 from both sides:

x^2 + 10 x = 24

Add 25 to both sides:

x^2 + 10 x + 25 = 49

Write the left hand side as a square:

(x + 5) ^2 = 49

Take the square root of both sides:

x + 5 = 7 or x + 5 = - 7

Subtract 5 from both sides:

x = 2 or x + 5 = - 7

Subtract 5 from both sides:

Answer: x = 2 or x = - 12 Thus the Answer is A.