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Question

If a2+2ab+b2a2b2=2a+2b, what is the value of ab?

A
1
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B
1
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C
2
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D
12
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E
12
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Solution

The correct option is D 12
Given, a2+2ab+b2a2b2=2a+2b
(a+b)2(a+b)(ab)=2(a+b)
(a+b)=2(a+b)(ab)
2(ab)=1
ab=12

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