Question

Solve x2 + 2x + 9 = 0

Answer 1

you may use quadratic formula

Answer 2

If u compare both equations u will get
a=1
b=2
c=9

Answer 3

Tel us
x=?

Answer 4

\[\frac{ -2 \pm \sqrt{2^{2}-4(1)(9)} }{ 2(1) } = \frac{ -2\pm \sqrt{-32} }{ 2 }\]

Answer 5

now I'm not sure about this part, so if i'm wrong, correct me anyone. i just wanna help.

\[\frac{ -2\pm \sqrt{-1}\sqrt{32} }{ 2 } = \frac{ -2 \pm (i) (4\sqrt{2}) }{ 2 } = \frac{ -2 \pm 4i \sqrt{2} }{ 2 } = \frac{ 2 (-1 \pm 2i \sqrt{2}) }{ 2 } = -1 \pm 2i \sqrt{2}\]