Question

Expand: (x+3y)(x^2-3xy+9y^2)

Answer 1

Answer:

x^3 - 6x^2y + 6xy^2 + 27y^3

Step-by-step explanation:

x^3 - 3x^2y - 3X^2y - 3xy^2 + 9xy^2 + 27y^3

x^3 - 6x^2y + 6xy^2 + 27y^3