9乘以m的2次方减4乘以n的2次方的因式分解

2024-11-22 22:27:57
推荐回答(3个)
回答1:

9M^2-4n^2
解:原式=(3M)^2-(2n)^2
=(3M 2n)(3M-2n)

回答2:

9M原式=(3M)^2-(2n)^2
=(3M 2n)(3M-2n)

回答3:

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