3x^2+5xy-2y^2+x+9y-4还有几题..完了我有加分的..a^3+1 8x^3+4x^2-2x-1 4xy+1-ax^2-y^2 x^2(x+1)-y(xy+x)ps:是不是因式分解一定要化解成 乘积的
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3x^2+5xy-2y^2+x+9y-4还有几题..完了我有加分的..a^3+1 8x^3+4x^2-2x-1 4xy+1-ax^2-y^2 x^2(x+1)-y(xy+x)ps:是不是因式分解一定要化解成 乘积的
3x^2+5xy-2y^2+x+9y-4
还有几题..完了我有加分的..
a^3+1 8x^3+4x^2-2x-1 4xy+1-ax^2-y^2 x^2(x+1)-y(xy+x)
ps:是不是因式分解一定要化解成 乘积的
3x^2+5xy-2y^2+x+9y-4还有几题..完了我有加分的..a^3+1 8x^3+4x^2-2x-1 4xy+1-ax^2-y^2 x^2(x+1)-y(xy+x)ps:是不是因式分解一定要化解成 乘积的
3x^2+5xy-2y^2+x+9y-4
=(3x-y)(x+2y)+(x+9y)-4
=(3x-y+4)(x+2y-1)
a^3+1=(a+1)(a^2-a+1),直接使用公式.
8x^3+4x^2-2x-1
=4x^2(2x+1)-(2x+1)
=(4x^2-1)(2x+1)
=(2x-1)(2x+1)^2
4xy+1-ax^2-y^2
当a=4时,可以分解因式为(1-2x+y)(1+2x-y),否则不能分解因式.
x^2(x+1)-y(xy+x)
=x^3+x^2-xy^2-xy
=x(x^2-y^2)+x(x-y)
=x(x-y)(x+y+1)
根据因式分解的定义,因式分解的结果必须是单项式、多项式的乘积.
(x+2y-1)(3x-y+4)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
3x*x+5xy-2y*y+x+9y-4
3x*x+5xy-2y*y+x+9y-4请因式分解
x²-y²+5x+3y+4(x+y-2xy)(x+y-z)+(xy-1)²
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
已知x-y=3xy,求5x+2xy-5y/x-4xy-y的值
诺x+y=6,xy=4 求(5x-4y-3xy)-(8x-y+2xy)
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x,
(-2xy+2x+5y)-(3xy+2y-2x)-(x+4y+xy)其中x-y=4xy=-1
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
求(3x^+y^-5xy)-【2x^-(-4xy-y^+7x^)】=?
求(3x^+y^-5xy)-【2x^-(-4xy-y^+7x^)】=?
已知x^2+9y^2-2x-6y+2=0,求{-(xy/(x-y)^2}^4*(y^2-xy/x)^3*x^4/y^10/(x/xy-y^2)^5的值