10x立方减7x平方y加2y立方加4x平方y方减5 是几次几项式-搜答案-大师作文网

x²-4x+y²-10y+29=0（x-2）²+（y-5）²=0（x-2）²=0（y-5）²=0x=2y=5x²y³+2

∵(x+1)²+|y-2|=0　∴x+1=0　　y-2=0　∴x=-1　　y=2　∴x²y²+3xy-7x²y²-(5/2)xy+1+5x²

x^2-2x+y^2+6y+10=0x^2-2x+1+y^2+6y+9=0(x-1)^2+(y+3)^2=0x-1=0,y+3=0x=1,y=-3(x-y)/(x+y)=4/(-2)=-2

|x-2|+[y-(2/3)]^3=0问y^2=?

x^2-4x+y^2-10y+29=0x^2-4x+4+y^2-10y+25=0(x-2)^2+(y-5)^2=0x=2,y=5x^2y^2+2x^3*y^2+x^4y^2=x^2y^2(1+2x+x

16x-y=2x^2+y^2=12x^3y-2x^2y^2+xy^3=xy(x^2+y^2-2xy)=xy(x-y)^2x-y=2==>(x-y)^2=4==>x^2+y^2-2xy=4又因为x^2+

4x平方加y平方减4x减6y加10=0,(4x²-4x+1)+(y²-6y+9)=0(2x-1)²+(y-3)²=0x=1/2,y=3后面的题目看不清.把x=1

(5x³-7x³y+3x²y)+2x³-(-7x³y+3x²y+7x³)=(5x³+2x³-7x³)

x^3y^3-(1/2)x^y+y^-2x^3y^3+0.5x^+y^+x^3y^3-2y^-3=(1-2+1)x^3y^3-(1/2)x^y+0.5x^+(1+1-2)y^-3=-(1/2)x^y+

-(3x平方y+10x立方)+3x立方+6x立方y+3x平方y-（6x立方y-7x立方）=-3x²y-10x³+3x³+6x³y+3x²y-6x

已知ax乘(5x减3x的平方y加by)等于10x的平方减6x的立方y加2xyax*(5x-3x^2y+by)=10x^2-6x^3y+2xy5ax^2-3ax^3y+abxy=10x^2-6x^3y+

X减二分之一的绝对值加上(2y加1）的平方等于0x-1/2=0x=1/22y+1=0y=-1/2x^2+y^3=(1/2)^2+(-1/2)^3=1/4-1/8=1/8

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x^2+4x+y^2-10y+29=0(x^2+4x+4)+(y^2-10y+25)=0(x+2)^2+(y-5)^2=0x=-2,y=5x^2y^2+2x^3y^2+x^4y^2=100-400+4

x+y=1x^3+y^3=(x+y)(x^2-xy+y^2)=x^2+y^2-xy=(x+y)^2-3xy=1-3xy=2xy=-1/3(x+y)^2=x^2+y^2+2xy=1x^2+y^2=1+2

再问：最后一个是y的平方你写错了再问：最后一个是y的平方你写错了再答：你的题目打的是立方？？？

(-3xy)立方*2x立方/(-3x平方y)=-27x^3y^3*2x^3/(-3x^2y)=18x^4y^2

x^2y-xy^2+x^3-y^3=x^2y-y^3+x^3-xy^2=y(x^2-y^2)+x(x^2-y^2)=(x+y)(x^2-y^2)=(x+y)^2(x-y)不懂还可以问(⊙o⊙)哦再问：

6(x+y)立方-2(x+y)平方=2(x+y)平方【3（x+y)-1】=2(x+y)平方（3x+3y-1)