ab-a+b-1=___.m²+n²+6n-2mn-6m+9=___.
3个回答
ab-a+b-1
=a(b-1)+(b-1)
=(a+1)(b-1)
m2+n2+6n-2mn-6m+9
=(m+n)2-6(m+n)+9
=(m+n-3)2
相关问题
分解因式 mn②+6mn+9m 3m③-6mn+3n② a-6ab+9ab② 2x②
m平方+n平方+6n-6m-2mn+9
m²+2mn+n²-6m-6n+9怎么解·呢?
5m-6mn-5n/4m+3mn-4n 1/m-1/n=9
mn-n=15,m-mn=6,则m-n=(),-2mn+m+n=()
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)-(2m-3n)怎么做
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)÷(2m-3n)化简,
已知1/m-1/n=4,则m-2mn-n/2m-2n+7mn的值等于A.6 B.-6 C.2/15 D.-2/7
若m-2m+10=6n-n 求【m-n/m+2mn+n+2/mn÷(1/m+1/n)】÷1/m+n 怎样做?
已知mn-n=15,m-mn=6,那么m-n=______,-2mn+m+n=______.