X3-4xy2-2x2y+8y3(x2+x)2-8(x2+x)+1212x2-5x-25x2+6xy-8y2x4+64x3-11x2+31x-213a3b-81b4a7-ab6ab(c2-d2)+cd(a2-b2)4x4-13x2+9(x2-2x)2-7(x2-2x)+12x2+x-(a2-a)本人很笨,可以的话写得详细清楚点.
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x3+2x2y+2xy2+y3因式分解
(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3.
x.y取何值时,代数(x3y+3x2y-5xy2+6y3)+(y3+2xy2+x2y-2x3)-(4x2y-x3-3xy2+7y3).y取何值时,代数(x3y+3x2y-5xy2+6y3)+(y3+2xy2+x2y-2x3)-(4x2y-x3-3xy2+7y3)的值都是常数?
试说明代数式(x3+3x2y-4xy2+6y3)-(2x3-x2y-xy2-y3-1)+(x34x2y+3xy2-7y3)的值与xy取值无关
因式分解:x3-y3-x2y+xy2
x3+x2y-xy2-y3=
分解因式:X3+2X2Y+2XY2+Y3=
分解因式 x3+y3-x2y-xy2
x3-y3-x2y+xy2分解因式
分解因式x3-xy2+x2y-y3
试说明:无论x,y取何值时,代数式(x3+3x2y-5+6y3)+(y3+2xy2+x2y-2x3)-(4x2y-x3-3xy2+7y2)的值是常数.要具体过程,注意格式
求方程x3+x2y+xy2+y3=8(x2+xy+y2+1)的全部整数解
x2+x2y-xy2-y3得值
若x3+y3=1000,x2y-xy=-496,则(x3-y3)+(4xy2-2x2y)-2(xy2-y3)= ----
若m=x3-3x2y+2xy2+3y2 n=x3-2x2y+xy2-5y3,则2x3-7x2y+5xy2+14y2等于( )若m=x3-3x2y+2xy2+3y2 n=x3-2x2y+xy2-5y3,则2x3-7x2y+5xy2+14y2等于( )空里用字母表示
分解因式 1)4x3+8x2-x-2 2)x3x2y-xy2-y3 3)x2y-xy2+2x-2y 4)x2-4y2-x+2y分解因式 1)4x3+8x2-x-2 2)x3x2y-xy2-y3 3)x2y-xy2+2x-2y 4)x2-4y2-x+2y 5)ac-bc-a2+2ab-b2 6)a3+a2b-a2c-abc 7)x2-2x-b2-2b 8)5a2m+6abm-10a2n-12abn9)-xy+bx+ay-ab 10)a(b-c)+a2-bc 11)x
当x=2014求代数式(2x3一3x2y一2xy2)一(x3一2xy2十y3)十(一x3十3x2十y3)的值
已知A=x3-2y3+3x2y+xy2-3xy+4,B=y3-x3-4x2y-3xy-3xy2+3,C=y3+x2y+2xy2+6xy-6,试着说明对于x,y,z的任何值,A+B+C是常数.某同学做一道代数题:求代数式10x9+9x8+8x7+…+3x2+2x+1,当x=-1时