Question

Which of the following is a solution of x2+4x=-15

Answer 1

\[you~~~meant~~~~~~~~ x^2+4x=-15\]

Answer 2

ummmm

Answer 3

No I didn't mean that, what I had typed is what the question was.

Answer 4

see

Answer 5

wait wait for it

Answer 6

the third 1

Answer 7

Sorry my connection snapped right when I wanted to posted it,
\[\frac{-b±\sqrt{b^2-4ac}}{2a}\]

Answer 8

a=1
b=4
c=15

I added 15 to both sides to set it equal zero.
\[x^2+4x\color{red}{+15}=-15\color{red}{+15}\]
\[x^2+4x\color{red}{+15}=0\]

Answer 9

Can you do your questions using quadratic formula?

Answer 10

I got it thank you

Answer 11

\[\huge\color{blue}{x=\frac{±\sqrt {4^2-4(1)(15)}}{2(1)}}\ \]

Answer 12

Anytime!

Answer 13

Plug in a=1, b=4, c=15

remember that \[\sqrt{-1}=i\]

Answer 14

You forgot your 4