Question

g) (2x-7y)•(3y+5x)
h) (3m+2n)•(3m-2n)
i) (m+n)•( m^2+n^2)=?
(^2 înseamnă la puterea a doua )

Answer 1

g)-29xy+10x^2-21y^2 h) 2m^2-4n^2 i)m^3+mn^2+m^2n+n^3