Question

многочлены
(выполните умножение)
(7x-y)(3x+2xy-4y)

Answer 1

21х^2+14х^2*у-28ху-3ху-2х*у^2+4у^2

Answer 2

(7x-y)(3x+2xy-4y)=21х^2+14х^2у-28ху-3ху-2ху^2+4у^2=21х^2+14х^2у-31ху-2ху^2+4у^2.