What will be the factors of 4a2 - (2b – c)2
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4ᴀ2 - (4ʙ2 + 4ʙᴄ + ᴄ2)
= ( 2ᴀ )2 - ( 2ʙ + ᴄ )2
= [ 2ᴀ - ( 2ʙ + ᴄ )][ 2ᴀ + (2ʙ + ᴄ )]
[ ∵ ᴀ2 - ʙ2 = ( ᴀ + ʙ )( ᴀ - ʙ )]
= [ 2ᴀ - 2ʙ - ᴄ ][ 2ᴀ + 2ʙ + ᴄ ]
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