Question

\(\left(\frac{3}{7}\right)^{21}:\left(\frac{9}{49}\right)^6\)ai nhanh mình tick cho

Answer 1

\(\left(\frac{3}{7}\right)^{21}:\left(\frac{9}{49}\right)^6\)\(=\left(\frac{3}{7}\right)^{21}:\left(\frac{3}{7}\right)^{2^6}\)\(=\left(\frac{3}{7}\right)^{21}:\left(\frac{3}{7}\right)^{12}\)

                                  \(=\left(\frac{3}{7}\right)^{21-12}\)\(=\left(\frac{3}{7}\right)^9\)

Answer 2

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

\(=\left(\frac{3}{7}\right)^9.\left(\frac{3}{7}\right)^{12}:\left[\left(\frac{3}{7}\right)^2\right]^6\)

\(=\left(\frac{3}{7}\right)^9.\left(\frac{3}{7}\right)^{12}:\left(\frac{3}{7}\right)^{12}\)

\(=\left(\frac{3}{7}\right)^9=\frac{3^9}{7^9}=\frac{19683}{40353607}\)

Answer 3

(3/7)²¹:(3/7²)⁶

(3/7)²¹:(3/7)¹²

(3/7)^21-12

(3/7)⁹

Answer 4

(3/7)⁹

Answer 5

(3/7)²¹:(3/7²)⁶

(3/7)²¹:(3/7)¹²

(3/7)^21-12

(3/7)⁹