(4x^2y-5xy^2)-(3x^3y-4xy^2)5a-[a^3+(5a^2-2a)-2(a^2-3a)]15+3(1-a)-(1-a-a^2)+(1-a+a^2-a^3)(4a^2b-3ab)+(-5a^2b+2ab)(6m^2-4m-3)+(2m^2-4m+1)化简再求值:5x^2+4-3x^2-5x-2x^2-5+6x其中x=-3体校里男生人数x女生是y,教练人数和学生人数的
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 14:47:03
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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)
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)
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)
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
(-2xy+2x+5y)-(3xy+2y-2x)-(x+4y+xy)其中x-y=4xy=-1
求(3x^+y^-5xy)-【2x^-(-4xy-y^+7x^)】=?
求(3x^+y^-5xy)-【2x^-(-4xy-y^+7x^)】=?
因式分解 (3x+2y)-(x-y)² x²-xy+3y-3x 2x²+xy-y²-4x+5y-6
(-5xy)^2(-xy)^3+(4x^2y-3x)(-x^3y^4)+x^5y^5
因式分解 求过程 x-xy+3y-3x 2x+xy-y-4x+5y-6
3x平方-5x平方y-{2x平方y+6xy平方-[2xy平方-3x平方y+(3x平方y-4xy平方】}
化简2(x²y+xy)-3(x²y-xy)-4x²y