Question

(x+y)³ - (x-y)³when x=2 and y =-1

Answer 1

-26

Step-by-step Explaination:

If we place 2 in place of x and -1 in place of y,

we get:

=[2+(-1)]³-[2-(-1)]³

=(2-1)³-(2+1)³

=1³-3³

=1-27

=-26

Hope this helps!