Question

The number of real solutions of the equation, $x^2-|x|-12=0$ is:

• A. 2
• B. 3
• C. 1
• D. 4

Answer 1

Answer: (A)

$|x{|}^2-|x|-12=0$
$(|x|+3)(|x|-4)=0$
$|x|=4\Rightarrow x=\pm 2$