Question

How to factorise 216a cube-125b cube

Answer 1

Answer:

216x³ -125y³

= (6x)²-(5y)³

= (6x-5y)[(6x)²+(6x)(5y)+(5y)²]

= (6x-5y)[36x²+30xy+25y²]

I hope you can help

Answer 2

Step-by-step explanation:

=(6a-5b)(6a^2+6a×5b+5b^2)

=(6a-5b)(6a^2+30ab+5b^2)

=6a(6a^2+30ab+5b^2)-5b(6a^2+30ab+5b^2)

=36a^3+180a^2b+30b^2-30a^2b-150ab^2+25b^3

=36a^3+150a^2b+30b^2-150ab^2+25b^3