Question

Tìm x: |x−5|=18+2.(−8)

Answer 1

|x−5|=18+2.(−8)|x-5| = 18 + (-16)|x-5| = 2x-5 = 2 hoặc x-5 = -2x = 7 hoặc x = 3

Answer 2

\(\left|x-5\right|=18+2\times\left(-8\right)\)

|x - 5| = 18 - 16

|x - 5| = 2

x - 5 = \(\pm\) 2

\(\left[\begin{array}{nghiempt}x-5=2\\x-5=-2\end{array}\right.\)

\(\left[\begin{array}{nghiempt}x=5+2\\x=5-2\end{array}\right.\)

\(\left[\begin{array}{nghiempt}x=7\\x=3\end{array}\right.\)