Question

[(2x-y)+(2)]³
pls solve this
I will mark you as brainliest ​

Answer 1

[(2x-y) + (2)]^3

= (2x-y)^3 + (2)^3 + 3(2)(2x-y)^2 + 3(2x-y)(2)^2

= (2x)^3 - (y)^3 - 3(y)(2x)^2 - 3(2x)(y)^2 + 8 + 6[(2x)^2 + (y)^2 - 2(2x)(y)] + 12(2x - y)

= 8x^3 - y^3 - 12(x^2)y - 6xy^2 + 8 + 24x^2 + y^2 - 24xy + 24x - 12y

= 8x^3 - y^3 - 12(x^2)y - 6xy^2 + 24x^2 + y^2 + 24xy + 24x - 12y + 8