1.
a) x^5y(y^4+xy^5-x²y^6+x³y^7)=x^5y^5+x^5y^5+x^5y^6-x^7y^7+x^8y^8
b)(2x³+3x²-a-a²)xya=2x^4ya+3x³ya-xya²-xya³
2.
a) 2x(5x³-3x-bx+b³)b=10bx^4-6bx²-2b²x²-2b²x²+2xb^4
b)-xt(x²t²-xt-3)p=-x³t^3p+xt²p+3xtp
1.
a) x^5y(y^4+xy^5-x²y^6+x³y^7)=x^5y^5+x^5y^5+x^5y^6-x^7y^7+x^8y^8
b)(2x³+3x²-a-a²)xya=2x^4ya+3x³ya-xya²-xya³
2.
a) 2x(5x³-3x-bx+b³)b=10bx^4-6bx²-2b²x²-2b²x²+2xb^4
b)-xt(x²t²-xt-3)p=-x³t^3p+xt²p+3xtp