(3m+2n-p)² - (3m+2n+p)² I will give him a lot of thanks and Mark him brainlist and follow also
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Use identity
please refer picture
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(9msquare +4nsquare-psquare) - (9msquare+4nsquare +psquare)
9m^2+4n^2-p^2-9m^2-4n^2-p^2
-2p^2
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