Question

solve the following questions: i. (3p-q)cube ii. (3n-1/3n)cube iii. (2b-a)cube iv. (x+2y)cube v. (2+y)cube pls solve fast I urgently need the answers

Answer 1

Answer

Cube of x−2y=(x−2y)3

Using, (a−b)3=a3−b3−3ab(a−b)

=x3−(2y)3−3(x)(2y)(x−2y)

=x3−8y3−6xy(x−2y)

=x3−8y3−6x2y+12xy2