Question

Simplify:- (x + y)³ – (x - y)³ – 6
y (x² - y²)
​ please screenshot dedena OK

Answer 1

Step-by-step explanation:

I kept the pic of the solution

hope this helpful to u

Answer 2

Answer:

8y3

Step-by-step explanation:

(x+y) 3-(x-y)3-6y(x2-y2)

=(x+y)3-(x-y)3-6y(x-y) (x+y)

=(x+y) 3-(x-y)((x-y) 2+6y(x+y))

=(x+y) 3-(x-y) (x2+y2-2xy+6xy+y2)

=(x+y) 3-(x-y)(x2+7y2+4xy)

=x3+y3+3x2y+3xy2-x3-7xy2-4x2y+x2y+7y3+4xy2

=8y3