若|3x+2y-4|与(5x+7y-3)的平方互为相反数,则x,y的值为( ) A x=1 y=-1 B x=2 y=-1 C D 无数组解
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/10 23:00:23
x){ѽƸBۨRפɎ>
mJ]cZl'&=ٱO{MݠcfN%HaP{:*l
*mu
L#YE@}wX&HV?n٨iXTU=lx{)%`
N6yv 1
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-5|与|2x+3y-15|互为相反数,则x+y=?
3x+y+5与2-4y+2x是同类项,求x,y
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+(x-3y)(x-5y)+(x-2y)(x-4y)
若(2x+y-4与(3x-5y-12)的绝对值互为相反数,则x+y=
若(2x+y-4)²与|3x-5y-12|互为相反数,则x+y=___
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
若|3x+2y-4|与6(5x+7y-3)的平方互为相反数,则x y的值是 A X=1 Y=1 B x=2 y=-1 C不存在
关于X,Y的方程组3X+2Y=2m+5与x-y=4m-5的解x,y满足x+2y
已知|2-x|与|x-y+4|互为相反数,求代数式3(x-y)-5(x-y)*2-3(x-y)+(y-x)*2-4(x+y)+3(y-x)的值
已知|2-x|与|x-y+4|互为相反数,求代数式3(x-y)-5(x-y)-3(x-y)+(y-x)-4(x+y)+3(y-x)的值
2x-5+y/3=x+3y/4+7与10(x-y)-4(1-x)/3-y=0 求方程组的解
5/4(x+y)(-x-y)^3*[-4/3(x-y)]*[-3/5(y-x)^2]
(3x-4y)(5x-4y)-(7x-8y)(6y-5x)
把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)= 3(x-y)把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)=3(x-y)²-4(x-y)+7(x-y)-6(x-y)²=
5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解
5x^3y(x-y)^3-10x^4y^3(y-x)^2
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于