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Question

Select the factors of a2+7a+12.


A

1

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B

a+1

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C

2

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D

a+2

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Solution

The correct options are
A

1


D

a+2


a2+7a+12=a2+4a+3a+12=a(a+4)+3(a+4)=(a+3)(a+4)

Thus, the factors of a2+7a+12 are (a+3) and (a+4).


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