Question

11-2.lx+5l=3

Answer 1

x = -9 hoặc x =-1

Answer 2

11-2.lx+5l=3

2.|x-5|=11-3=8

|x-5|=8:2=4

\(\Leftrightarrow\orbr{\begin{cases}x-5=4\\x-5=-4\end{cases}\Leftrightarrow\orbr{\begin{cases}x=4+5\\x=-4+5\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=9\\x=1\end{cases}}}\)

Answer 3

11-2./x+5/=3

2./x+5/=11-3

2./x+5/=8

/x+5/=8:2

/x+5/=4

x+5=4 hoac x+5=-4

nếu  x+5=4

x=-1

nếu x+5=-4

x=-4-5

x=-9

Vậy x=-9 ;1