Question

Solve -2x2 +3x - 9 = 0.

Answer 1

ax2+bx+c=0

Answer 2

so you have to figure out what a, b and c are.

Answer 3

a=−2

Answer 4

b=3

Answer 5

c=−9

Answer 6

b=3 c=-9

Answer 7

Then we use the formula

Answer 8

We just want numbers for a b and c and no x

Answer 9

-3+- √3^2 4(-2)(-9)/2(-2)

Answer 10

−a∗−b=+c

Answer 11

-3+-√-63 /-4

Answer 12

From there we want to get the complex number

Answer 13

sqrt -1=i

Answer 14

3/4=0.75 0r the sqrt of 7

Answer 15

does that help?