Question

Find the cube of (2y+3)

Answer 1

Answer:

(2y + 3 ) ³

8y + 27

8y = 27

y = 27 /8

y = 3.375

Answer 2

Answer:

$Cube \: of \: x−2y=(x−2y)^3$

$Using, (a−b)^3 =a^3 −b^3 −3ab(a−b) \\ </p><p>=x^3 −(2y)^3 −3(x)(2y)(x−2y) \\ </p><p>=x^3 −8y3−6xy(x−2y) \\ </p><p>=x^3 −8y^3 −6x^2 y+12xy^2$