Find the solutions to the equation.

begin equation . . . 2 times, x raised to the second power, plus 12 times x, minus 14 . . . equals 0 . . . end equation

A
x equals 1, comma, x equals 7

B
x equals negative 1, comma, x equals 7

C
x equals 1, comma, x equals negative 7

D
x equals negative 1, comma, x equals negative 7