Q. 223.6( 10 Votes )

Simplify (2a + b)3 + (2a- b)3

Answer :

We have (2a + b)3 + (2a - b)3


We know,

(a+b)³=a³+3a²b+3ab²+b³ 
 (a-b)³=a³-3a²b+3ab²-b³

So,
= (8a3 + 12a2b + 3ab2 + b3)+(8a3 - 12a2b + 3ab2 - b3)
                             = 16a3 + 6ab2

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.