3x^2y-[2xy^2-4(1/2xy-3/4x^2y)+xy]+3xy^2,其中x=3,y=-1/3
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/06 11:59:04
![3x^2y-[2xy^2-4(1/2xy-3/4x^2y)+xy]+3xy^2,其中x=3,y=-1/3](/uploads/image/z/990466-34-6.jpg?t=3x%5E2y-%5B2xy%5E2-4%281%2F2xy-3%2F4x%5E2y%29%2Bxy%5D%2B3xy%5E2%2C%E5%85%B6%E4%B8%ADx%3D3%2Cy%3D-1%2F3)
x)33ԍ6350tM@ )۞X[akSikolTOf;
VkQV
VWT"KVT9ϧlDXt{fşXPRDS\g PqI
3x^2y-[2xy^2-4(1/2xy-3/4x^2y)+xy]+3xy^2,其中x=3,y=-1/3
3x^2y-[2xy^2-4(1/2xy-3/4x^2y)+xy]+3xy^2,其中x=3,y=-1/3
3x^2y-[2xy^2-4(1/2xy-3/4x^2y)+xy]+3xy^2,其中x=3,y=-1/3
3x^2y-[2xy^2-4(1/2xy-3/4x^2y)+xy]+3xy^2
=3x^2y-2xy^2+2xy-3x^2y-xy+3xy^2
=xy^2+xy
由x=3,y=-1/3得:
原式=3*1/9-3*1/3=-2/3
XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2)
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
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
(-3xy+2xy)-(4xy+xy)
2x²y-3(2xy-xy)-xy
计算3xy[2xy-x(y-2)+x-1]
(-3x^y+2xy)-( )=4x^+xy
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
(x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy)
若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
(-2xy+2x+5y)-(3xy+2y-2x)-(x+4y+xy)其中x-y=4xy=-1
x-y=1,xy=2.求:(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
.已知:x-y=1,xy=-2.求:(-2xy+2 x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
化简 2(xy-xy²+3)-(-4xy²+xy-1) 其中,x等于--4,y等于-3
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)