Câu hỏi của Phạm Hằng Nga

Question

$\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{9}{49}\right)^6$

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Mashiro Shiina · Accepted Answer

$\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{9}{49}\right)^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left[\left(\dfrac{3}{7}\right)^2\right]^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{3}{7}\right)^{12}$

$=\left(\dfrac{3}{7}\right)^9$Câu trả lời: $\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{9}{49}\right)^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left[\left(\dfrac{3}{7}\right)^2\right]^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{3}{7}\right)^{12}$

$=\left(\dfrac{3}{7}\right)^9$

Hải Ngân · Answer

$\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{9}{49}\right)^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left[\left(\dfrac{3}{7}\right)^2\right]^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{3}{7}\right)^{12}$

$=\left(\dfrac{3}{7}\right)^9.$Câu trả lời: $\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{9}{49}\right)^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left[\left(\dfrac{3}{7}\right)^2\right]^6$

$=\left(\dfrac{3}{7}\right)^{21}:\left(\dfrac{3}{7}\right)^{12}$

$=\left(\dfrac{3}{7}\right)^9.$

Đại số lớp 7