Question

x2 + 2x + 9 = 0

Answer 1

so, you have a quadratic equation \[x^2+2x+9=0\] where you want to solve for x ?
Compare this quadratic equation with \(ax^2+bx+c=0\)
find \[a=...?\\b=...?\\c=...?\]
then the two roots of x are:
\(\huge{x_{1,2}=\frac{-b \pm \sqrt{b^2-4ac}}{2a}}\)

Answer 2

sorry, yes, i am here. but I already solved it on my own...thankyou though :D

Answer 3

good! welcome anyways ^_^