factor completely -5x^2+10x-15?
A-5(x^2-2x+3)
B-1(x^2-10x+15) C.-5x(x^2-2x+3)
D-5(x^2-2x-3)
A-5(x^2-2x+3)
B-1(x^2-10x+15) C.-5x(x^2-2x+3)
D-5(x^2-2x-3)