Question

simplify: - (3x – y)(9x2 + 3xy + y2
) – (3x - y)3

Answer 1

Answer:

16x^2+27x^y-9x^y^2+18y^2+18y^2+3xy^@+y^4-108xy-6xy^2

Step-by-step explanation:

First we will multiply the first and the last term as they are simliar
(3x-y)^2=9x^2+y^2-6xy
next we multiply hte remaining term like
(a-b+c)(d-e)
ad-ae-bd+be and soo on
we get the answer
16x^2+27x^y+9x^y^2+18y^2+3xy^3+y^4-108xy-18x^2y^2-6xy^2
we combine the like terms and then we get the answer
16x^2+27x^y-9x^y^2+18y^2+18y^2+3xy^@+y^4-108xy-6xy^2

ik the answer is long