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a
two real solutions
b
no prime solution
c
one integral solution
d
no irrational solution
answer is B.
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Detailed Solution
log2(x−0.5)log2(x+1)=log2(x+1)log2(x−0.5) or log2(x+1)2=log2(x−0.5)2∴ log2(x+1)=±log2(x−0.5) If log2(x+1)=log2(x−0.5). Then, x+1=x−0.5, hence no solution If log2(x+1)=log(x−0.5)−1. Then, x+1=1x−(1/2)=22x−1 or (x+1)(2x−1)=2 or 2x2+x−3=0 or 2x2+3x−2x−3=0 or (x−1)(2x+3)=0⇒ x=1