Question

Simplify : (5a+3b)³ - (5a-3b)³

Answer 1

Yello !
Your answer is in the pic
It is a shortcut method, which if you understand it, you will master it.
I think, you should tilt my picture and see.

The answer = (10a)(25a²+27b²)

Hope you find my answer useful and hope you mark my answer as brainliest !

Answer 2

hi mate,

solution: (5a+3b)³-(5a-3b)³

= (5a)³+3*(5a)²*3b+3*5a*(3b)²+(3b)³- [(5a)³-3*(5a)²*3b+3*5a*(3b)²-(3b)³]

=(5a)³+3*(5a)²*3b+3*5a*(3b)²+(3b)³-(5a)³+3*(5a)²*3b-3*5a*(3b)²+(3b)³

=2*3*(5a)²*3b+2*(3b)³

=450a²b+54b³

i hope it helps you.