выполните умножение 1) (2a^2-3b)(a^2+2ab+5b^2) ,2)(x^2-2xy)(x^2-5xy+3y^2),3) (x-y)(x^3+x^2y+xy^2+y^3),4) (a+b)(a^3-a^2b+ab^2-b^3),5) (5a-4b)(a^3+2a^2b-5ab^2-3b^3), 6)(2x+3y)(x^3+3x^2y-3xy^2+4y^3)

1) (2a²-3b)(a²+2ab+5b²)=2a⁴+4a³b+10a²b²-3a²b-6ab²-15b³2) (x²-2xy)(x²-5xy+3y²)=x⁴-5x³y+3x²y²-2x³y+10x²y²-6xy³=x⁴-7xy+13x²²y²-6xy³3) (x-y)(x³+x²y+xy²+y³)=x⁴+x³y+x²y²+xy³-x³y-x²y²-xy³-y⁴=x⁴-y⁴4) (a+b)(a³-a²b+ab²-b³)=a⁴-a³b+a²b²-ab³+a³b-a²b²+ab³-b⁴=a⁴-b⁴5) (5a-4b)(a³+2a²b-5ab²-3b³)=5a⁴+10a³b-25a²b²-15ab³-4a³b-8a²b²+20ab³+12b⁴=5a⁴+6a³b-33a²b²+5ab³+12b⁴6) (2x+3y)(x³+3x²y-3xy²+4y³)=2x⁴+6x³y-6x²y²+8xy³+3x³y+9x²y²-9xy³+12y⁴=2x⁴+9x³y+3x²y²-xy³+12y⁴