*Nhân,chia đa thức
-Làm tính nhân
1, x^2.(3x^2-4x+2)
2, 2/3xy.(2x^2y-3xy+y^2)
3, (2x+3)(3x^2+x+5)
4, (2x^2-x)(5x^2+3x+1)
5, (3x-2y)(3xy+2y^2+3x)
6, (3xy-2x)(x^2y-xy+1)
6, (3xy-2x)(x^2y-xy+1)
-Làm tính chia
1, (15x^3y^2-6x^2y-3x^2y^2):6x^2y
2, (x^3y^4-6x^2y^3+3x^4y^4):3x^2y^2
3, (20x^2y^4+15x^3y^5-10x^3y^6):5x^2y^3
4, (x^4-2x^3+2x-1):(x^2-1)
5, (x^3-3x^2+3x-2):(x^2-x+1)
6, (2x^5 -x^4+2x^3-3x^2+x+1):(2x^2+x-1)