Question

MEDAL IF HELPED

Solve x2 + 9x + 9 = 0.

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

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

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

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

Answer 1

@Techworm

Answer 2

same with this one plz

Answer 3

Is it the quadratic formula?

Answer 4

i always mess up the QF

Answer 5

use this formula
where a,b and c are ax2+bx+c=0

Answer 6

\[x= \frac{ -9\pm \sqrt{9^{2}-4 \times 1 \times 9 } }{2 } = \frac{ -9 \pm \sqrt{45} }{2 }\]

Answer 7

so its a?