9(10x + 9y)
y(x - 9)(x - 9)
y3 + 2y2 - 81y -162 = y2(y+2) - 81(y+2) =(y+2)(y2-81) = (y+2)(y-9)(y+9)
54 + -90x
As long as the equation is 9x3 + 27x2 - 90x = 0, the answer is : 27 + 27x2 - 90x = 0 9x3 = 27 27 + 54 - 90x = 0 27x2 = 54 81 - 90x = 0 27 + 54 = 81 81 = 90x add 90x to each side 9/10 = x divide each side by 90 x = .9
57+9y=81y+12 45=72y 45/72=y
90x=1977x=1977/90x=21.966666667
9y12
75
27x2 - 90x + 27 = 9*(3x - 1)*(x - 3)
135
90x
90x