Toán Lớp 6: tìm x :
(x-1)(x-2) – 2(x-1)^2 = 0
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Toán Lớp 6: tìm x :
(x-1)(x-2) – 2(x-1)^2 = 0
Comments ( 2 )
$⇒(x-1)(x-2-2(x-1))=0$
$⇒-x(x-1)=0$
$TH1: -x=0$
$x=0$
$TH2: x-1=0$
$x=1$