Question

выполните умножение
3x(3x^2+4xy-y^2)
b^4(b^6-7b^2-2)
-7p(-4p^2+p^2-6p+3)
ПОЖАЙЛУСТА!!!

Answer 1

9x^3+12x^2y-3xy^2
b^24-7b^8-2b^4
28p^3-7p^3+42p^2-21p=21p^3+42p^2-21p

Answer 2

$3x(3x^2+4xy-y^2)=9x^3+12x^2y-3xy^2 \ b^4(b^6-7b^2-2)=b^{10}-7b^6-2b^4 \ -7p(-4p^2+p^2-6p+3)=28p^3-7p^3+42p^2-21p= \ =21p^3+42p^2-21p$