Solve for x in the equation x squared minus 12 x plus 36 is equal to 90
A
x is equal to 6 plus or minus 3 square root of 10B
x is equal to 12 plus or minus 3 square root of 22C
x is equal to 6 plus or minus 2 square root of 7D
x is equal to 12 plus or minus 3 square root of 10