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Simplify the following expression completely. 
MathF4OPP1Q9

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12a2 - 3b= 3(2a +b)(2a-b)
2a2-ab-b= 2a(a-b)+b(a-b)
3(2a +b)(2a-b)
2a(a-b)+b(a-b)
 =3(2a-b)
     a-b
3(2a-b)/a-b

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