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Question

Total number of real values of x such that (12+x)17x+(12+x)1712=643x17 is/are


A

zero

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B

one

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C

seven

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D

two

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Solution

The correct option is B

one


(12+x)17x+(12+x)1712=643x17 (12+x)(12+x)17=4.(64).x.x17=28.x87 12+x=x(28)78 x=12127


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