Question

\(\left(\dfrac{-3}{5}\right)^{15}:\left(\dfrac{-9}{25}\right)^7\)

Answer 1

Tách 9=3^2 và 25=5^2

Answer 2

\(\left(-\dfrac{3}{5}\right)^{15}:\left(-\dfrac{9}{25}\right)^7=\left(-\dfrac{3}{5}\right)^{15}:\left(-\dfrac{3}{5}\right)^{14}=-\dfrac{3}{5}\)

Answer 3

ôi bạn ơi

mik ko bt

Answer 4

\(\left(-\dfrac{3}{5}\right)^{15}:\left(-\dfrac{9}{25}\right)^7=\left(-\dfrac{3}{5}\right)^{15}:\left(-\dfrac{3}{5}\right)^{14}=\left(-\dfrac{3}{5}\right)\)