早教吧作业答案频道 -->数学-->
-x^2+2xy-y^2因式分解-x^2+2xy-y^23^2y(x-y)^2-6xy^2(y-x)^2y^2-2xy/5+x^2/25
题目详情
-x^2+2xy-y^2因式分解
-x^2+2xy-y^2
3^2y(x-y)^2-6xy^2(y-x)^2
y^2-2xy/5+x^2/25
-x^2+2xy-y^2
3^2y(x-y)^2-6xy^2(y-x)^2
y^2-2xy/5+x^2/25
▼优质解答
答案和解析
-x^2+2xy-y^2
=-(x-y)²
3^2y(x-y)^2-6xy^2(y-x)^2
=3y(x-y)²(3--2x)
y^2-2xy/5+x^2/25=y²-2xy/5+x²/25
=(y-x/5)²
=-(x-y)²
3^2y(x-y)^2-6xy^2(y-x)^2
=3y(x-y)²(3--2x)
y^2-2xy/5+x^2/25=y²-2xy/5+x²/25
=(y-x/5)²
看了-x^2+2xy-y^2因式分...的网友还看了以下:
这个符号“^”表方次数,.求下面3题的通解, y(x^2-xy+y^2)+x(x^2+xy+y^2 2020-05-14 …
matlab中怎么求解多元非线性方程组,请高手给一个例子,和全部的求解命令,比如:u2=x^2*y 2020-05-16 …
求解二元函数,已知xy,函数也已知,怎么样用MATLAB求解?方程f(x,y) = p00 + p 2020-05-16 …
7.x>0,y>0,a=x+y,b=sqrt(x^2+xy+y^2),c=msqrt(xy),求是 2020-06-12 …
matlab求方程组的解用[x,y]=solve('(x-1)^2+(y-2)^2-25=0',' 2020-07-18 …
(x+y)/2算单项式还是多项式?我的理解是(x+y)/2=1/2(x+y)我的理解是(x+y)/ 2020-07-27 …
关于二阶常系数非齐次线性微分方程求特解y*形式的题目我非常的混乱.1;问题一:何时使用y*=y*1 2020-07-31 …
请用代入法解:{y+1=2(x+2)2x-3y=1{y=1-x5x+2y=8请用代入法解:{y+1 2020-08-01 …
x(y+z-x)=39-2(x*x)1.解方程组y(z+x-y)=52-2(y*y)z(x+y-z) 2020-10-30 …
我究竟错哪里了常微分方程求解dy/dx=2((y+2)/(x+y-1))^2我的解法如下两边求倒数2 2020-12-12 …