Question

( x+3y) (xsquare minus 3xy + 9y squre)

Answer 1

Answer:

by multiplying both bracket

we get

xcube + 9x yspuare - 3xsqyare y + xsquare y + 9ycube - 3x ysquare

by solving this

we get

xcube + 9ycube + 6xysquare - 2xsquare y