Question

Solve 3x^2 = –12x – 15

Answer 1

(3x -3)(x+5) = 0
x = 1 or x = -5

Answer 2

careful, your sign on the 15 turns out to be incorrect then

Answer 3

try this instead... (see attached)

Answer 4

sorry that wrong

Answer 5

3x^2 = –12x – 15
so
3x^2 + 12x + 15 = 0
this has no real roots - have u learned about complex numbers?

Answer 6

oser's solution is correct, it has complex roots -2+i and -2 -i