Question

Expand the value of (2 x +7 y)³

Answer 1

Hi,

This question is in the form (a+b)³ where a=2x and b=7y

The expasion of (a+b)³=a³+b³+3a²b+3ab²

Substituting the value of a and b in the given equation,

We get,

(2x+7y)³=(2x)³+(7y)³+3×(2x)²×7y+3×2x×(7y)²

             =8x³+343y³+84x²y+294xy²

Hope this helps you.

Answer 2

Answer:

Hope It Helps