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Question

Simplified form of 3a4a−225a+19a−12a+15a−2 is

A
3a2.2a5.5a+4
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B
2a5.32a.5a+4
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C
2a+5.3a+2.5a+4
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D
2a5.3a2.5a+4
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Solution

The correct option is C 2a5.32a.5a+4
3a4a225a+19a12a+15a2 =3a.(22)a2.(52)a+1(32)a1.2a+1.5a2

=3a.22a4.52a+232a2.2a+1.5a2

=3a2a+2.22a4a1.52a+2a+2

=3a+2.2a5.5a+4

=2a5.3a+2.5a+4

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