Posted by Mark on .
(a) Which of the following are examples of the expression "difference of two cubes"? (Select all that apply.)
(y2  9)3
3  4y
64  y3
(y  1)3
y3  27
27  3y
y3
(b) Which of the following are examples of the expression "cube of a difference"? (Select all that apply.)
27  3y
(y  1)3
(y2  9)3
y3
y3  27
64  y3
3  4y

Math HELPPPP 
Steve,
difference of a and b means ab
difference of two cubes means a^3  b^3
That would be 64y^3 or y^327
difference means ab
cube of difference is (ab)^3
that would be (y^29)^3 or (y1)^3