Đáp án + Giải thích các bước giải:
Ta có: `|x|=1/2`
`⇒TH1: x=-1/2`
`⇒A=(-1)/((-1)/2-2)=2/5`
`⇒TH2: x=1/2`
`⇒A=(-1)/(1/2-2)=2/3`
$@Mốc$
Mình trình bày trong hình ^^
$#chucbanhoctotnhe;333$
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