Question

CHECK MY ANSWER
Use the quadratic formula to find the zeros of the function. y = 16x2 + 40x + 25

is the answer {-0.8} ??

Answer 1

That is not the answer I get

Answer 2

[ -40 ± Sq Root ( 1,600 - 4•16•25 ) ] / 32 which equals
[ -40 ± Sq Root ( 0 ) ] / 32
x=-40 / 32
x = -5 / 4