When x=2 and y=3, 3*2*3*2*2=72
(x + y)3 + (x - y)3 = (x3 + 3x2y + 3xy2 + y3) + (x3 - 3x2y + 3xy2 - y3) = 2x3 + 6xy2 = 2x*(x2 + 3y2)
6y-y3 = 3
-y3 + 7y3
x3-y3
When x=2 and y=3, 3*2*3*2*2=72
(x + y)3 + (x - y)3 = (x3 + 3x2y + 3xy2 + y3) + (x3 - 3x2y + 3xy2 - y3) = 2x3 + 6xy2 = 2x*(x2 + 3y2)
6y-y3 = 3
-y3 + 7y3
x3-y3
72
27-y3 factored completely = 24
X2+Y3+15 All you can do is simplify it.
No
y times y times y (or y3)
30
12x2 - 24x + 9y