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Question

We can split the middle term of a4 + 5a2 + 6 as :


A

a2 and 4a2

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B

7a2 and -2a2

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C

3a2 and 2a2

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D

6a2 and –a2

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Solution

The correct option is C

3a2 and 2a2


a4 + 5 a2 + 6

We need to look for two numbers whose product is 6 and sum is 5.So they are 3 and 2, hence the answer.


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