作业帮3xy-[2xy-2（xy-2分之3xy)+xy]+3xy,其中x=3,y=负3分之一大神们帮帮忙
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/16 05:33:45
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3xy-[2xy-2（xy-2分之3xy)+xy]+3xy,其中x=3,y=负3分之一大神们帮帮忙
3xy-[2xy-2（xy-2分之3xy)+xy]+3xy,其中x=3,y=负3分之一大神们帮帮忙
3xy-[2xy-2（xy-2分之3xy)+xy]+3xy,其中x=3,y=负3分之一大神们帮帮忙
=3xy-2xy+2(xy-3xy/2)-xy+3xy =3xy-2xy+2xy-3xy-xy+3xy =xy+xy =xy(y+1) =3x(-1/3)(-1/3+1) =-2/3 满意请及时采纳!谢谢!
(-3xy+2xy)-(4xy+xy)
3xy-3xy-xy+2yx
3xy-4xy-（-2xy）
3xy-4xy-（-2xy）
2xy.(-3xy)÷(xy)
2xy-xy-(-3xy)=
[(2xy-3)(2xy+3)+(xy+3)^2]/(-xy)
xy－3xy＋2xy－xy
3xy^2*(-2xy)
化简:xy分之3x^2+2xy-xy分之2x^2-xy=
[(xy-2)2次方-(-xy-1)(xy-4)]除(-3分之1xy)
3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x)
3(xy－xy)－2(xy＋xy)＋3xy
当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值
(-4xy^3)×（-xy）+（-3xy^2）^2
（-3xy^2)^2+(-4xy^3)*(-xy)=多少
(-4xy^3)*(-xy)+(-3xy^2)^2
(3xy^2)^2+(-xy^3)(4xy)