\(a:\dfrac{81}{125}=\dfrac{3^4}{5^3}\)

\(b:\dfrac{-8}{27}=-\dfrac{2^3}{3^3}\)

81/125 bằng 81/125 mũ 1

-8/27 bằng -2/3 mũ 3

câu này mink đã được học rồi nên chắc đúng

\(\dfrac{81}{125}=\dfrac{3^4}{5^3}\) ; \(-\dfrac{8}{27}=-\left(\dfrac{2}{3}\right)^3\)

-8/27 = (-2/3) mũ 3

còn 81/125 chắc đề bài sai

-8/27=(-2/3)^3=-2^3/3^3

còn cái kia mk k bt

\(-\frac{8}{27}=-\left(\frac{2}{3}\right)^3.\)

-8/27 = (-2/3)³  nha còn cái kia mình cụng ko bít đâu mình cũng đang hỏi

\(\dfrac{81}{125}-\dfrac{8}{27}=\dfrac{3^4}{5^3}-\dfrac{2^3}{3^3}\)

\(\frac{9^2}{5^3}\)- \(\frac{2^3}{3^3}\)

0,25 = (0,5)²

\(\dfrac{1}{49}\) = (\(\dfrac{1}{7}\))²

- \(\dfrac{27}{125}\) = (- \(\dfrac{3}{5}\))³

 \(\dfrac{81}{16}\) = ( \(\dfrac{9}{4}\))²

\(\dfrac{169}{196}\) = (\(\dfrac{13}{14}\))²

0,36⁸=(0,6²)⁸=0,6¹⁶

0,216⁴=(

0,36⁸=(0,6²)⁸=0,6¹⁶

0,216⁴=(0,6³)⁴=0,6¹²

\(\left(0,36\right)^8=\left(0,6\right)^{16}\)

\(\left(0,216\right)=\left(0,6\right)^{12}\)

\(\dfrac{81}{125}=\dfrac{3^4}{5^3}\)

\(\dfrac{-8}{27}=\dfrac{\left(-2\right)^3}{3^3}=\left(\dfrac{-2}{3}\right)^3\)

Ta có:

\(\dfrac{81}{125}=\dfrac{3^4}{5^4}=\left(\dfrac{3}{5}\right)^4\)

\(-\dfrac{8}{27}=-\dfrac{2^3}{3^3}=\left(-\dfrac{2}{3}\right)^3\)

\(\dfrac{81}{125}=\dfrac{3^4}{5^4}=\left(\dfrac{3}{5}\right)^4\)

\(\dfrac{-8}{27}=\dfrac{\left(-2\right)^3}{3^3}=\left(\dfrac{-2}{3}\right)^3\)

Chúc bạn học tốt!