3xy

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xy×(xy)²-3xy

xy×(xy)²-3xyx^2+y^2-3xy=4x^2+y^2+2xy-5xy=4(x+y)^2-5xy=43^2-5xy=45xy=9-45xy=5xy=1这要是问什么啊

(-3xy+2xy)-(4xy+xy)

(-3xy+2xy)-(4xy+xy)(-3xy+2xy)-(4xy+xy)=-xy-5xy=-6xy-6xy去括号后合并同类项原式=-3xy+2xy-4xy-xy=(-3+2-4-1)xy=-6xy先括号内化简,再去括号相减(-3xy+2

3xy-3xy-xy+2yx

3xy-3xy-xy+2yx3xy-3xy-xy+2yx=-xy+2xy=xy你这全是同类项原试=xy(3-3-1+2)=xy结果为xy。3xy-3xy=0xy=yx2xy-yx=xy(3-3-1+2)xy=xy

3xy-4xy-(-2xy)

3xy-4xy-(-2xy)提公因式xy,用结合律求3xy-4xy-(-2xy)=(3-4+2)xy=xy3xy-4xy-(-2xy)=3xy-4xy+2xy=xy3xy-4xy-(-2xy)=-xy+2xy=xy如果帮到你,请记得采纳,O

4xy+6xy-3xy=?

4xy+6xy-3xy=?7xy

3xy-4xy-(-2xy)

3xy-4xy-(-2xy)等于xy

2xy.(-3xy)÷(xy)

2xy.(-3xy)÷(xy)等于负6.x.y

2xy-xy-(-3xy)=

2xy-xy-(-3xy)=4xy4xy4xy

[(2xy-3)(2xy+3)+(xy+3)^2]/(-xy)

[(2xy-3)(2xy+3)+(xy+3)^2]/(-xy)=(4X^2Y^2-9+X^2Y^2+6XY+9)/(-XY)=(5X^2Y^2+6XY)/(-XY)=-5XY-6

【x(xy-xy)-y(x-xy)】÷3xy

【x(xy-xy)-y(x-xy)】÷3xy2xy

xy-3xy+2xy-xy

xy-3xy+2xy-xy

3xy^2*(-2xy)

3xy^2*(-2xy)3xy^2*(-2xy)=-2*3x²y³=-6x²y³

xy^3-xy 进行因式分解

xy^3-xy进行因式分解结果为:xy(y+1)(y-1)过程:先提取公因式xy,则原式=xy(y^2-1),然后利用平方差公式可以得到原式=xy(y+1)(y-1)xy(y-1)(y+1),是这样吧

6xy/3xy=?

6xy/3xy=?2222若xy都不等于0,则答案为2若xy至少有一个为0,要是没有上大学或者高中的话,应该就直接写不成立就可以了,要是有这方面知识的话用洛必达法则求导也可以得出为2那[6xy-3(xy-1/2x的平方y]/3xy=?3后面

3xy² -6xy

3xy²-6xy原式=3xy(y-2)

3(xy-xy)-2(xy+xy)+3xy

3(xy-xy)-2(xy+xy)+3xy

3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x)

3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x)3xy(x²-xy²+xy)-xy²(2x²-xy+2x)=3x³y-3x²y³+3x²y&#

(-4xy^3)×(-xy)+(-3xy^2)^2

(-4xy^3)×(-xy)+(-3xy^2)^2(-4xy^3)×(-xy)+(-3xy^2)^2=4x^2y^4-3x^2y^4=x^2y^4

(-3xy^2)^2+(-4xy^3)*(-xy)=多少

(-3xy^2)^2+(-4xy^3)*(-xy)=多少(-3xy^2)^2+(-4xy^3)*(-xy)==9x²y^4+4x²y^4=13x²y^4

(-4xy^3)*(-xy)+(-3xy^2)^2

(-4xy^3)*(-xy)+(-3xy^2)^2解原式=4x²y的4次方+9x²y的4次方=(4+9)x²y的4次方=13x²y的4次方原式=(-4xy)·y²·(-xy)+9x²