Đáp án:
`|2x^2+|x-5||=2x^2+5`
`=>` \(\left[ \begin{array}{l}2x^2+|x-5|=2x^2+5\\2x^2+|x-5|=-2x^2-5\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}|x-5|=5\\|x-5|=-4x^2-5\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}x-5=5\\x-5=-5\end{array} \right.\)
`(` loại `-4x^2-5` vì `|x-5|>=0`
`=>` \(\left[ \begin{array}{l}x=10\\x=0\end{array} \right.\)
