expalin each of the following using suitable identities
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Bonjour !!!❤❤
Identity to be used :
( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ca
=> ( -2a + 5b - 3c )²
=> ( -2a )² + ( 5b )² + ( -3c )² - 2( 2a )( 5b ) - 2( 5b )( 3c ) + 2( 3c )( 2a )
=> 4a² + 25b² + 9c² - 20ab - 30bc + 12ca
Hope it helps......✌✌
Identity to be used :
( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ca
=> ( -2a + 5b - 3c )²
=> ( -2a )² + ( 5b )² + ( -3c )² - 2( 2a )( 5b ) - 2( 5b )( 3c ) + 2( 3c )( 2a )
=> 4a² + 25b² + 9c² - 20ab - 30bc + 12ca
Hope it helps......✌✌
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