Question

Solve 3x^2 + 15 = -6x

Answer 1

Answer choices:

Answer 2

@Jaylikescookies @phi @petiteme @Destinymasha @Euler271 @Hailey553 Help please :)

Answer 3

These involve imaginary numbers.. I suck at imaginary numbers. Sorry :c

Answer 4

@Jaylikescookies Lol that's okay, I suck at math in general

Answer 5

\[3x^2 + 15 = -6x\] start with \[3x^2+6x=-15\] then divide by 3 to get
\[x^2+2x=-5\]

Answer 6

probably easiest to complete the square

\[(x+1)^2=-5+1=-4\] so \[x+1=\pm\sqrt{-4}=\pm2i\]

Answer 7

subtract 1 and get \[x=-1\pm2i\]

Answer 8

Thank you! ..but that's that an answer choice..

Answer 9

i am sticking with my answer

Answer 10

in fact it comes with a money back guarantee

Answer 11

Lol but it's not an answer choice! What do I do?

Answer 12

i am only authorized to give answers and help with math problems

Answer 13

I know, but..I think you're wrong :P These are the answer choices:

Answer 14

@satellite73