Question

What are the solutions of 2x2 + 8x = –26?

Answer 1

= x^2 + 4x + 13 = 0
you can use quadratic formula to solve this

Answer 2

rewrite it

2x^2 + 8x + 26 = 0

divide by 2

x^2 + 4x + 13 = 0

you'll need the general quadratic formula or completing the square to solve it

Answer 3

so is it 2+6i?

Answer 4

isn't it 2 plus or minus 6i

Answer 5

im sorry yes.. am i correct?

Answer 6

yes.... I think so... I only did it quickly as mental arithmetic

Answer 7

i really hope i am right -_-

Answer 8

crap can someone check this for me? cause i realy dont want to get this wrong..

Answer 9

It would be \[-2 ± 3i\]
\[x = \frac{-b ± \sqrt{b^2 - 4ac}}{2a} \implies \frac{-4 ± \sqrt{-36}}{2} \implies -2 ± 3i\]

Answer 10

thank you very much

Answer 11

np :)

Answer 12

!!! the correct answer is −2 ± 3i !!!