Question

(-3x +2y -4z)³ expand the following using suitable identities​

Answer 1

Answer:

Step-by-step explanation:FORMULA=(a+b)^3

=a^3+b^3+3ab(a+b)

Now substitute,

a=3x

b=2y

=(3x)^3+(2y)^3+3(6xy)(3x+2y)

=27x^3+8y^3+18xy(3x+2y)

=27x^3+8y^3+18xy(3x)+18xy(2y)

=27x^3+8y^3+54x^2y+36xy^2

Hope it helps you