what is the formula of (a+b)³
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a3+ b3+3ab(a+b) is the required answer for your question
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( a + b )³
=>a³ + b³ + 3ab( a + b )
Proof :
( a + b )³
=> ( a + b )² ( a + b )
=> ( a² + b² + 2ab ) ( a + b )
=> a³ + ab² + 2a²b + a²b + b³ + 2ab²
=> a³ + b³ + 3a²b + 3ab²
=> a³ + b³ + 3ab( a + b)
Proved.
=>a³ + b³ + 3ab( a + b )
Proof :
( a + b )³
=> ( a + b )² ( a + b )
=> ( a² + b² + 2ab ) ( a + b )
=> a³ + ab² + 2a²b + a²b + b³ + 2ab²
=> a³ + b³ + 3a²b + 3ab²
=> a³ + b³ + 3ab( a + b)
Proved.
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