(m-2n+3)(m+2n-3)怎么解??

2025-01-03 19:43:35
推荐回答(5个)
回答1:

【m-(2n-3)][m+(2n-3)]
=m^2-(2n-3)^2
=m^2-4n^2+12n-9

如有疑问,请追问;如已解决,请采纳

回答2:

(m-2n+3)(m+2n-3)
=[m-(2n-3)](m+2n-3)=m的平方-(2n-3)的平方=-4n的平方+m的平方+12n-9

回答3:

[m-(2n-3)][m+(2n-3)]
=m^2-(2n-3)^2
做到这一步就差不多了

回答4:

[m-(2n-3)][m+(2n-3)]

回答5:

-9(m-2n)(m+2n)
=-9m方+36n方