Question

Simplify 2x+y whole cube +2x-y whole cube

Answer 1

Hope u understand it

Answer 2

Answer:

Step-by-step explanation:

(A+B)^3 = A^3+3X^2Y+3XY^2+Y^3

(A-B)^3 = A^3-3X^2Y+3XY^2-Y^3

SO BY APPLYING the formula

You will get

(8x^3+y^3+12x^2y+6xy^2) + (8x^3 - 12x^2y+6xy^2-y^3)

We will get, (after cancelling)

8x^3+ 8x^3 + 6xy^2 + 6xy^2

=16x^3+12xy^2

=4(4x^3+3xy^2)