Level:
Project ID:
1003028803
Accepted:
1
Find all the real roots of the equation.
\[ \left(x^2+1\right)\left(x^2-2\right)\left(x+2\right)=0 \]
\( \left\{-2;-\sqrt2;\sqrt2\right\} \)
\( \left\{-2;-\sqrt2;-1;1;\sqrt2\right\} \)
\( \left\{-2;-1;1;2\right\} \)
\( \left\{-2;-\sqrt2;-1;\sqrt2\right\} \)