Question

NEED HELP

solve the quadratic equation by completing the square
-3x^2 +9x=1 (1 point)

Answer 1

use the general formula:

\[x ^{2}+bx = (x+\frac{ b }{ 2 })^{2}-(\frac{ b }{ 2 })^{2}\]

where in your case, the -3 in -3x^2 must be outside the general formula for it to work. you should keep the 1 to that side, and b is 9. Enter those numbers into the equation - and rearrange it so x is on it's own - that will be your answer.

Answer 2

Okay. Thank you!!