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Question

If a = 0.1039, then the value of 3a4a24a+1 is

A
0.1039
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B
0.2078
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C
1.1039
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D
2.1039
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Solution

The correct option is C 1.1039
We have to find the value of
3a4a24a+1
Now, 4a22a2a+1
=2a(2a1)(2a1)
=(2a1)(2a1)=(2a1)2
3a(2a1)2=3a2a+1=a+1
=0.1039+1=1.1039

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