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Number of real roots of the equation 2^x...

Number of real roots of the equation `2^x=2^(x-1)+2^(x-2)=7^x+7^(x-1)+7^(x-2)` is (A) 4 (B) 2 (C) 1 (D) 0

A

4

B

2

C

1

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
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