Solve x2 + 9x + 9 = 0.

Question

australopithecus · Answer

Factor

anonymous · Answer

how? could you go step by step please

australopithecus · Answer

Do you know how to use the quadratic formula?

anonymous · Answer

no

australopithecus · Answer

http://patrickjmt.com/using-the-quadratic-formula/

lgbasallote · Answer

i dont think that's factorable @Australopithecus so quadratic formula or completing the square are the only ways

australopithecus · Answer

watch this video it will explain it clearly to you :)

australopithecus · Answer

yeah I realized that @Igbasellote the second I really looked at it

mertsj · Answer

$$x=\frac{-9\pm \sqrt{81-4(1)(9)}}{2}=\frac{-9\pm \sqrt{45}}{2}=\frac{-9\pm3\sqrt{5}}{2}$$

australopithecus · Answer

the quadratic formula give you the roots thus you can insert the roots you get out of the quadratic equation into

(x - (root 1))(x - (root 2)) = 0

that will give you a factored form of that equation

anonymous · Answer

You don't need the factored form. "Solving" a function is finding the roots. The final answer is whatever the roots are.

australopithecus · Answer

@petewe Yeah I was just providing her with extra information just incase she did want to factor something like this in the future

anonymous · Answer

Besides, inserting the roots directly into that equation would not actually give you the original function.