\(|2x|.|-3,5|=|-28|\)
\(|2x|.3,5=28\)
\(|2x|=28\div3,5\)
\(|2x|=8\)
TH1: \(2x=8\) TH2: \(2x=-8\)
\(x=8\div2\) \(x=-8\div2\)
\(x=4\) \(x=-4\)
VẬY X= 4 HOẶC X=-4
CHÚC BẠN HỌC TỐT!!!!!!!!!
\(\left|2x\right|.\left|-3,5\right|=\left|-28\right|\)
\(\left|2x\right|.3,5=28\)
\(\left|2x\right|=28:3,5\)
\(\left|2x\right|=8\)
\(2x=-8;8\)
\(2x=-8\) \(2x=8\)
\(x=8:\left(-2\right)\) \(x=8:2\)
\(x=-4\) \(x=4\)
Vậy \(x=-4;4\)
|2x|.|−3,5|=|−28|
|2x|.3,5=28
|2x|=28÷3,5
|2x|=8
TH1: 2x=8 TH2: 2x=−8
x=8÷2 x=−8÷2
x=4 x=−4
VẬY X= 4 HOẶC X=-4
Hok tốt !