Question

Выполните умножение многочленов
1)(2х+1)(5х-4)
2)(5а-3b)(4a-b)
3)(3x+2y)(x-y)
4)(p-3q)(8p+5q)

Answer 1

1) =10х^2-8х+5х-4=10х^2-3х-4
2) =20а^2-5ab-12ab+3b^2=20a^2-17ab+3b^2
3) =3x^2-3xy+2xy-2y^2=3x^2-xy-2y^2
4) =8p^2+5ap-24ap-15a^2=8p^2-19ap-15а^2