Question

solve using the quadratic formula: (x-3)(x+1)=-6

Answer 1

Mulitiply out the left side and collect like terms. Then add 6 to both sides to get the -6 on the left side. Then use the quadratic formula.

Answer 2

thats where i am stuck. i have x^2-2x+9=0

Answer 3

Do foil again on left
(x - 3)(x + 1) = -6
x^2 + x - 3x - 3 = -6
Add 6 to both sides:
x^2 - 2x + 3 = 0

Answer 4

ive got that.. then what do i do?

Answer 5

Now use the quadratic formula, with a = 1, b = -2 and c = 3. Do you know the quadratic formula?

Answer 6

oh okay got it yes thank you!!

Answer 7

\[x = \frac{ -b \pm \sqrt{b ^{2} - 4ac} }{ 2a }\]

Answer 8

ok, wlcm