Toán Lớp 7: Tìm nghiệm: 10x – 2x $x^{2}$ =
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Toán Lớp 7: Tìm nghiệm: 10x – 2x $x^{2}$ =
Comments ( 2 )
$2x(5-x)=0$
$TH1:2x=0$
$x=0$
$TH2:5-x=0$
$x=5$
Vậy S={0,5}