Toán Lớp 6: 15 mũ 2 nhân x chia 3 mũ 2 nhân x
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Toán Lớp 6: 15 mũ 2 nhân x chia 3 mũ 2 nhân x
Comments ( 2 )
= $\frac{15^{2} . x}{3^{2} . x}$
= $\frac{15^{2}}{3^{2}}$ = $x$
= $\frac{(3.5)^{2}}{3^{2}}$ = $x$
= $\frac{3^{2}.5^{2}}{3^{2}}$ = $x$
= $5^{2}$ = $x$
=> $x$ = $5^{2}$ = $25$
$Nấm#$