Question

mathsssssss help meeeeeee​

Answer 1

Step-by-step explanation:

You should use the formula

(a+b)^3 =a^3+3(a)^2(b)+3(a)(b)^2+b^3

Here the question is in the RHS form

So,

-27a^3+54a^2-36a+8

=(3a)^3+3x(3a)^2x(2)+3x(3a)x(2)^2+

(2)^ 3

=(-3a+2)^3