Question

Solve x2 + 9x + 9 = 0.

quantity of negative 9 plus or minus 3 square root of 5 all over 2

quantity of 9 plus or minus 3 square root of 5 all over 2

quantity of negative 9 plus or minus square root of 117 all over 2

quantity of 9 plus or minus square root of 117 all over 2

Answer 1

@Luigi0210 please help

Answer 2

Looks like you'll have to use the quadratic formula:
\[\LARGE \frac{-b \pm \sqrt{b^2-4ac}}{2a}\]

Answer 3

can you show the steps

Answer 4

@Luigi0210

Answer 5

Simple, plug in values and simplify:
\[\LARGE x^2+9x+9\]
a=1, b=9, c=9
\[\LARGE ax^2+bx+c\]

Answer 6

(−9±35√)/2

Source: http://openstudy.com/study#/updates/52841feae4b0218bc6514d3d

Answer 7

so it b? @Luigi0210

Answer 8

no a

Answer 9

\[-9±3\sqrt{5}2\]

Answer 10

Yes it would be A!

Answer 11

:)