Question

| 3 - 2x | = 5

Answer 1

bó tay

Answer 2

khi làm sai

Answer 3

\(\left|3-2x\right|=5\)

\(\Rightarrow\left[{}\begin{matrix}3-2x=5\\3-2x=-5\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=-1\\x=1\end{matrix}\right.\)

Vậy...

Answer 4

\(\left|3-2x\right|=5\)

\(\Rightarrow\left[{}\begin{matrix}3-2x=5\\3-2x=-5\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}2x=3-5=-2\\2x=3-\left(-5\right)=8\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=-1\\x=4\end{matrix}\right.\)

Vậy \(x\in\left\{-1;4\right\}\)

Answer 5

2x = 5 + 3 

2x = 8

x =8 : 2 

x=4 quá easy 

 

Answer 6

\(\left|3-2x\right|=5\)

\(\Leftrightarrow\left[{}\begin{matrix}-2x+3=5\\-2x+3=-5\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}-2x=2\\-2x=-8\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=-1\\x=4\end{matrix}\right.\)