若(2x-y-3)是4x^2-4xy+y^2-m的一个因式,则m的值为
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若(2x-y-3)是4x^2-4xy+y^2-m的一个因式,则m的值为
若(2x-y-3)是4x^2-4xy+y^2-m的一个因式,则m的值为
若(2x-y-3)是4x^2-4xy+y^2-m的一个因式,则m的值为
4x2-4xy+y2-m
=(2x-y)2-m 当m=9时
=(2x-y)2-32
=(2x-y-3)(2x-y+3)
因此m=9
若|x-3|+(y+2)=0,则(x-y+4xy/x-y)(x+y-4xy/x+y)的值是
若|x-3|+(y+2)²=0,则(x-y+4xy/x-y)(x+y-4xy/x+y)的值是
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
分解因式x^2y+x^2y+2xy^2-4xy^3是x^3y+x^2y+2xy^2-4xy^3
若X分之一减y分之一=3,求(5x+2xy-5y)/(x-4xy-y)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
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^)】=?
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
X×X-2XY-Y×Y+2X-2Y+2=02X×2X-4XY-2Y×2Y+3X-3Y+4=0X×X+2XY+Y×Y+X+Y-56=0X×X-2XY+Y×Y-X+Y-12=0X×X-3XY+Y×Y=-13X×3X-XY+3Y×3Y=13 两个在一起的方程之间有所联系(要求一步一步写出来)
若x+y=-1,则x^4+5x^3y+x^2y+8x^2y^2+xy^2+5xy^3+y^4=( )若x+y=-1,则x^4+5x^3y+x^2y+8x^2y^2+xy^2+5xy^3+y^4=( )
因式分解 (3x+2y)-(x-y)² x²-xy+3y-3x 2x²+xy-y²-4x+5y-6
已知1/x-1/y=2,求3x+7xy-3y/2x-3xy-2y答案是1/x-1/y=2(y-x)/xy=2 得:x-y=-2xy(3x+7xy-3y)/(2x-3xy-2y)=[3(x-y)+7xy]/[2(x-y)-3xy]=(-6xy+7xy)/(-4xy-3xy)=xy/(-7xy)=-1/7 谁能帮我解释一下=[3(x-y)+7xy]/[2(x-y)-3xy]=(-6xy+7xy)/(-4xy-3xy) 是怎
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]