Question

Which of the following is the possible value of $\left(x\right|$ if ${\left(x\right|}^2-6\left(x\right|+8=0$

• A. 5
• B. 2
• C. 8
• D. 1

Answer 1

The correct option is B

2

This can be considered as a quadratic in $\left(x\right|$, $|x{|}^2-6|x|+8=0$

$\Rightarrow (|x|-4)(|x|-2)=0$

$|x|=4$ or $|x|=2$