Question

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

• A. $2$
• B. $4$
• C. $1$
• D. $3$

Answer 1

Answer: (B)

$4$

Answer 2

$x^{2}-3\left|x\right|+2=0$ $\left(\left|x\right|-1\right)\left(\left|x\right|-2\right)=0$ $\Rightarrow x=\pm1, \pm2.$