用适当的方法分解因式 (5m²+3n²)²-(3m²+5n² )².
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用适当的方法分解因式 (5m²+3n²)²-(3m²+5n² )².
用适当的方法分解因式 (5m²+3n²)²-(3m²+5n² )².
用适当的方法分解因式 (5m²+3n²)²-(3m²+5n² )².
原式=[(5m²+3n²)+(3m²+5n² )][(5m²+3n²)-(3m²+5n² )]
=(8m²+8n²)(2m²-2n²)
=16(m²+n²)(m²-n²)
=16(m²+n²)(m+n)(m-n)