(3m的2次方-n的2次方)的2次方-(m的2次方-3n的2次方)的2次方_数学解答

(3m的2次方-n的2次方)的2次方-(m的2次方-3n的2次方)的2次方

人气：390 ℃　时间：2019-08-20 20:46:10

解答

解
(3m²-n²)²-(m²-3n²)²
=[(3m²-n²)-(m²-3n²)][(3m²-n²)+(m²-3n²)]
=(2m²+2n²)(4m²-4n²)
=8(m²+n²)(m-n)(m+n)