3a(m-n)的3次方-a(n-m)的平方+a(n-m)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 00:04:48
3a(m-n)的3次方-a(n-m)的平方+a(n-m)
xQ0&!&.?BކH Q7cݜH;/x-Nݻ^%5rˉhy~O%Q *U8ZJY5'72ۘ \Rn3.|* 3&6jȽr]h= Y`8|opH 01lVu>dڽn IWsG:\+y9:/~OX'N̴i{!ZX{~

3a(m-n)的3次方-a(n-m)的平方+a(n-m)
3a(m-n)的3次方-a(n-m)的平方+a(n-m)

3a(m-n)的3次方-a(n-m)的平方+a(n-m)
=3a(m-n)³-a(m-n)²-a(m-n)
=a(m-n)[3(m-n)²-(m-n)-1]
=a(m-n)(3m²-6mn+3n²-m+n-1)

3a(m-n)³-a(n-m)²+a(n-m)
=3a(m-n)³-a(m-n)²-a(m-n)
=a(m-n)[3(m-n)²-m+n-1]
=a(m-n)(3m²+3n²-6mn-m+n-1)

原式=3a(m-n)³-a(n-m)²+a(n-m)
=a[3(m-n)³-(m-n)²-(m-n)]
=a(m-n)[3(m-n)²-(m-n)-1]