Factor and solve -1x^2 + 7x + 18 = 0

-1x^2 + 7x + 18 = 0

-1(x^2-7x-18)=0

-1(x )(x ) ( -9)( +2)=0

-1(x-9) (x+2) = 0

Solve:

-1(x-9)=0

-1(x) (-1)(-9)=0

-1x+9=0

-1x+9-9=0-9

-1x=-9

-1x/-1=-9/-1

x=9

Solve:

-1(x+2) = 0

-1(x) (-1)(+2) = 0

-1x-2=0

-1x-2+2=0+2

-1x=2

-1x/-1=2/-1

x=-2