-1x^2 + 11x - 18 = 0
-1 (x^2 - 11x + 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