(3x + 3y)(x + y) = 3(x + y)2
Wiki User
∙ 13y ago9x2 - 6xy + y2 - 81 = (3x - y)2 - 81 = (3x - y - 9)*(3x - y + 9)
3x(2y + 1)
3x2+6xy+3y2= 3(x2+2xy+y2)= 3(x+y)2
(3x - y)(3x - y)
9x2 - 6xy + y2 - 81 = (3x - y)2 - 92 = (3x - y - 9)(3x - y + 9)
2y(3x + 1)
3x
9x^2-6xy+y^2 = (y-3x)^2 (y-3x)^2-81 -> ((y-3x)+9)((y-3x)-9)
It is: 3x*(x+7)
The GCF is 3xy.
(3x + 3y)(x + y) or 3(x + y)2
(x + 5)(3x + 1)