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Question

What should be subtracted to x2 + 2x + 2 to make it a perfect square?


A

3

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B

4

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C

2

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D

1

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Solution

The correct option is D

1


x2 + 2x + 2, only when 1 is subtracted from the equation it will become x2 + 2x + 1, a perfect square in the form (x + 1)2 .


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