Toán Lớp 6: (X mũ 2 cộng 3).5 cộng 5 bằng 40
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Toán Lớp 6: (X mũ 2 cộng 3).5 cộng 5 bằng 40
Comments ( 2 )
$(x^2+3)5=35$
$x^2+3=7$
$x^2=4$
$x^2=(±2)^2$
Vậy x={±2}