x的三次方y减3x的平方减2x的平方y的平方加6xy进行因式分解-搜答案-拍题作业网

x的三次方+3x的平方y-2x-6y=x²(x+3y)-2(x+3y)=(x+3y)(x²-2）=0

y=2x^3-3x^2y'=6x^2-6x=6x(x-1)x＜0,或x＞1时单调增,0＜x＜1时单调减极大值f(0)=0-0=0极小值f(1)=2-3=-1

x^3-2x^2y^2+xy^3=x(x^2+2xy^2+y^3)很高兴为您解答,【学习宝典】团队为您答题.请点击下面的【选为满意回答】按钮,

多项式x的四次方-kx的三次方y+2x的平方y-3x的三次方y+y的四次方合并后不含x的三次方项所以-k-3=0所以k=-3如果不懂,祝学习愉快!

(2x^3-3x^2y-2xy^2)-(x^3-2xy^2+y^3)=2x^3-3x^2y-2xy^2-x^3+2xy^2-y^3=x^3-3x^2y-y^3把x=2/y=-1带入原试=8+12+1=

x^3y-2x^2y^2+xy^3=x^3y+2x^2y^2+xy^3-4x^2y^2=xy(x^2+2xy+y^2)-4x^2y^2=xy(x+y)^2-4x^2y^2=12×7×7-4×12×12

6.联立a-b=30,b-c=25,两式相加,得a-c=55,a方-b方=1650可拆分成（a+c)(a-c)=1650,除以前面得出来的就是a+c=305.既然无意义,说明y-5为0,就是y为5,x

x²y-2x²y²+xy³=xy(x-2xy+y²)出题者估计是X的三次方y减2x的平方y的平方加xy的三次方x³y-2x²y&#

6(x-y)的三次方+12(x-y)的平方-3(y-x)的平方=6(x-y)³+12(x-y)²-3(x-y)²=6(x-y)³+9(x-y)²=3(

先分解因式,后乘法.(X^4-Y^4)/(X^3+X^2Y+XY^2+Y^3)=(X-Y)(X+Y)(X^2+Y^2)/(X^3+X^2Y+XY^2+Y^3)=(X-Y)(X^3+X^2Y+XY^2+

y=x³+3x²-1y′=3x²+6x当y′=0即3x²+6x=03x(x+2)=0x=0x=-2当x=0函数单调增当-2

x²y³-2x(4xy³)=x²y³-2x²y³=-x²y³

x/(x+y)(x--)^3=x/(x+y)(x--y)^3y/(y+x)(y--x)^2=y(x--y)/(x+y)(x--y)^3.

（x的三次方+3x的平方y-5xy的平方+6y三次方+1003）-（2x的三次方-y的三次方-2xy的平方-x的平方y-2）-(4x的平方y+7y的三次方-x的三次方-3xy的平方-1007）(x^3

y=x³/(x²+2x-3)=x³/(x-1)(x+3)当x→1或x→-3时,y→∞.因此x=1与x=-3都是此曲线的垂直渐近线.当x→+∞或x→-∞时,分别有y→+∞和

x(x+2y)(x-2y)

等于﹣2x的平方y（1+y的平方）再问：能不能把过程也写出来！！！再答：x^2y-2x^2y^3-3x^2y=-2x^2y-2x^2y^3=-2x^2y(1+y^2)

x³-y³-x²y+xy²=(x³-y³)-(x²y-xy²)=(x-y)(x²+xy+y²)-xy

x^2y-2x^2y^3-x^3y=x^2y(1-2y^2-x)

(3x分之y)的平方×(-y分之x)的三次方÷(-x分之2y)方=(y²/9x²)(-x³/y³)(x²/4y²)=-x³/36y