Question

$(x^2+1{)}^2=0$ has

• A. $\text{four real roots}$
• B. $\text{two real roots}$
• C. $\text{no real root}$
• D. $\text{one real root}$

Answer 1

The correct option is C $\text{no real root}$

$(x^2+1{)}^2=0$

Then, $x^2=-1$

$x^2=\sqrt{-1}$

Thus, no real roots.