Simplify 3a²b + 4ab² + 2a² – a²b and tell me how you do it
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3a²b + 4ab² + 2a² – a²b
=> ( 3 a² b - a² b ) + 4 ab² + 2a²
=> 2 a²b + 4ab² + 2a²
=> 2a ( ab + b + a )
=> ( 3 a² b - a² b ) + 4 ab² + 2a²
=> 2 a²b + 4ab² + 2a²
=> 2a ( ab + b + a )
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