(3x+3y)(5xy+8x+2y+1)
(x^8-y^6)(2x+5y²)
(5x²+2y^4)(x²+3y^5)
(xyz)(x+y+z³)
(4x^3-7z^2)(9x^5+2z^7)
(xy+yz)(3x+5yz+8x²y)
5x^4+15x²y^5+2x²y^4+6y^9
3x²y+5xy²z+8x^3y²+3xyz+5y²z²+8x²y²z
x²yz+xy²z+xyz^4
2x^9+5x^8y²-2x^8y^6-5y^8
15x²y+24x²+30xy+3x+15xy²+6y²+3y
36x^8+8x^3z^7-63x^5z^2-14z^9
