m²+2mn+n²-6m-6n+9怎么解·呢?
2个回答
m²+2mn+n²-6m-6n+9
=(m+n)^2-6(m+n)+9
=(m+n-3)^2
完全平方式
相关问题
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)-(2m-3n)怎么做
m平方+n平方+6n-6m-2mn+9
ab-a+b-1=___.m²+n²+6n-2mn-6m+9=___.
mn-n=15,m-mn=6,则m-n=(),-2mn+m+n=()
解方程:(m²-mn-2n²)x²+(5m²+2mn-12n²)x+6
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)÷(2m-3n)化简,
m-6n=20 mn=-6怎么解过程写出来
先阅读下面的内容,再解决问题,例题:若m2+2mn+2n2-6n+9=0,求m和n的值.解:∵m2+2mn+2n2-6n
先阅读下面的内容,再解决问题,例题:若m2+2mn+2n2-6n+9=0,求m和n的值.解:∵m2+2mn+2n2-6n
已知mn-n=15,m-mn=6,那么m-n=______,-2mn+m+n=______.