Question

expand (3a+1/4b)whole cube

Answer 1

Hey dear !!


Here is yr answer.....


=> (3a+1/4b)³


It is in the form of ------

(a+b)³ = a³+3a²b+3ab²+b³

a = 3a , b = 1/4b



= (3a)³+3(3a)²(1/4b)+3(3a)(1/4b)²+(1/4b)²

= 27a³+3(9a²)(1/4b)+3(3a)(1/16b²)+1/64b²

= 27a³+27/4a²b+9/16ab²+1/64b²




Hope it hlpz...

Answer 2

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