Q.
Number of solutions of the equation |2−|x∥=x+4 is
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a
0
b
1
c
2
d
Infinite
answer is B.
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Detailed Solution
|2−|x∥=x+4 (i)⇒ 2−|x|=x+4 (ii) or |x|−2=x+4 (iii)From (i) 2−x=x+4 or x=−1But this value does not satisfy (i).From (iii), −x−2=x+4 or x=−3, which satisfies (i).So, equation has only one solution.
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