Factor the following polynomial completely.
-0.7x2 - 4.9x + 12.6

Answer:
-0.7x2/-0.7 -4.9x/-0.7 + 12.6/-0.7=0/-0.7
x2+7x-18=0
x2+9x-2x-18
x(x+9) -2(x+9)
x+9=0. or x+9=0
x= -9. x=-9