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Q.

The number of solutions of the equation  |x4|x210x+24x3=1 is

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a

2

b

0

c

infinitely many

d

4

answer is A.

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Detailed Solution

x210x+24x3log|x4|=0x=4,6
and |x4|=1x=3,5

But x = 3, 4 are not permissible

x=5,6 are roots

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