Math miscellaneousHard

Question

The number of real solutions of the equation x2 - 3 |x| + 2 = 0 is

Options

A.2
B.4
C.1
D.3

Solution

x2 - 3 |x| + 2 = 0
(|x| - 1)(|x| - 2) = 0
⇒ x = ± 1, ±2.
Hence, (B) is the correct answer

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