Which equation has the same solution as 2x^2+16x-10=0

a: (x+4)^2=-3
b: (x+4)^2=-11
c: (x+4)^2=13
d: (x+4)^2=21

D
Divide the whole thing by 2
2(X^2+8x-5)
X^2+8x. =5
Half of 8 is 4 sq it so you add 16
X^2+8x+16= 5+16
(X+4)^2=21

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2