Question

can someone check my answer??
Solve 2x2 + 12x − 14 = 0 by completing the square.
A:2(x + 6)2 = 26; x = −6 +sqrt(16) , x = −6 − sqrt(16)
B:2(x + 6)2 = 20; x = −6 +sqrt(20) , x = −6 −sqrt(20)
C:2(x + 3)2 = 32; x = 1, x = −7
D:(x + 3)2 = 32; x = 13, x = 19

i think its C: 2(x + 3)2 = 32; x = 1, x = −7

Answer 1

c is correct!
solving the equation using quadratic equation proves x = -7 and x = 1 are valid answers for this equation

Answer 2

props @ashdeelitee

Answer 3

thanks)