Factor completely −3x2 + 6x − 9.

−1(3x2 − 6x + 9)
−3(x2 + 2x − 3)
−3(x2 − 2x + 3)
−3x(x2 − 2x + 3)

The fully factored form of −3x2 + 6x − 9 is -3(x-1)(x+3)