分解因式??
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(5m^2+3n^2)^2-(3m^2+5n^2)^2
=(5m^2+3n^2-3m^2-5n^2).(5m^2+3n^2+3m^2+5n^2)
=(2m^2-2n^2).(8m^2+8n^2)
=16(m^2-n^2)(m^2+n^2)
=16(m-n)(m+n)(m^2+n^2)
=(5m^2+3n^2-3m^2-5n^2).(5m^2+3n^2+3m^2+5n^2)
=(2m^2-2n^2).(8m^2+8n^2)
=16(m^2-n^2)(m^2+n^2)
=16(m-n)(m+n)(m^2+n^2)
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