因式分解(2m-n)^2-(3m +2n)^2
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因式分解(2m-n)^2-(3m +2n)^2
(2m-n)^2-(3m +2n)^2
=[(2m-n)+(3m +2n)][(2m-n)-(3m +2n)]
=(5m+n)(-m-3n)
=-(5m+n)(m+3n)
如果不懂,祝学习愉快!
=[(2m-n)+(3m +2n)][(2m-n)-(3m +2n)]
=(5m+n)(-m-3n)
=-(5m+n)(m+3n)
如果不懂,祝学习愉快!