分解因式:(3m+2n)的平方-(5m-2n)的平方=

2025-01-24 06:41:37
推荐回答(5个)
回答1:

(3m+2n)的平方-(5m-2n)的平方
=(3m+2n+5m-2n)(3m+2n-5m+2n)
=8m*(-2m+4n)
=-16m*(m-2n)

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回答2:

  (3m+2n)的平方-(5m-2n)的平方
  =[﹙3m+2n﹚+﹙5m-2n﹚][﹙3m+2n﹚-﹙5m-2n﹚]
  =﹙3m+2n+5m-2n﹚﹙3m+2n-5m+2n﹚

  =10m﹙4n-2m﹚

  =20m﹙2n-m﹚

回答3:

(3m+2n)的平方-(5m-2n)的平方
=(3m+2n+5m-2n)(3m+2n-5m+2n)
=8m(4n-2m)
=16m(2n-m)

回答4:

=(3m+2n+5m-2n)(3m+2n-5m+2n)
=8m(-2m+4n)
=-16m(m-2n)

回答5:

此题用平方差公式做(3m+2n)的平方-(5m-2n)的平方 =(3m+2n+5m-2n)(3m+2n-5m+2n) =8m(4n-2m) =16m(2n-m)望采纳