Question

If $|x^2+1|=2x$, then $x=$

• A. $1$
• B. $2$
• C. $-1$
• D. $-2$

Answer 1

The correct option is A $1$

As $x^2+1$ is always positive, so $x$ is positive.
$\Rightarrow x^2+1=2x\Rightarrow (x-1{)}^2=0\Rightarrow x=1$