Question

/x^2+2021/= -2 +2021 

help pls cần gấp

 

Answer 1

\(\Leftrightarrow\left|x^2+2021\right|=2019\\ \Leftrightarrow x\in\varnothing\left(x^2+2021>2019\Leftrightarrow\left|x^2+2021\right|>2019\right)\)