`(x-3).2-19=3(x+1)`
`2x-6-19=3x+3`
`2x-3x=3+6+19`
`-1.x=28`
`-x=28`
`=>x=-28`
`(x-8).(|x|+1)=0`
`<=>`\(\left[ \begin{array}{l}x+8=0\\|x|+1=0\end{array} \right.\)
`<=>`\(\left[ \begin{array}{l}x=8\\|x|=-1(vô lý)\end{array} \right.\)
`<=>x=8`
~ Học tốt ~