(a+ b)( b+ c)(c+ a)
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( a+b ) ( b+c ) ( c+a )
( ab + ac + b2 + bc ) ( c+a )
( abc + ac2 + b2c + abc + a2b + a2c + ab2 + abc )
3 abc + ac2 + b2c + a2b + a2c + ab2
Thankssss
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