\(\left(-\dfrac{4}{5}\right)^2=\dfrac{\left(-4\right)^2}{5^2}=\dfrac{16}{25}\)
\(\left(\dfrac{7}{2}\right)^3=\dfrac{7^3}{2^3}=\dfrac{343}{8}\)
\(\left(-\dfrac{4}{3}\right)^4=\dfrac{\left(-4\right)^4}{3^4}=\dfrac{256}{81}\)
\(\left(-\dfrac{17}{3}\right)^2=\dfrac{\left(-17\right)^2}{3^2}=\dfrac{289}{9}\)
\(\left(-\dfrac{9}{7}\right)^2=\dfrac{\left(-9\right)^2}{7^2}=\dfrac{81}{49}\)
\(\left(0,2\right)^4=\left(\dfrac{1}{5}\right)^4=\dfrac{1^4}{5^4}=\dfrac{1}{625}\)
\(\left(-2\dfrac{1}{4}\right)^2=\left(-\dfrac{9}{4}\right)^2=\left(\dfrac{9}{4}\right)^2=\dfrac{9^2}{4^2}=\dfrac{81}{16}\)
\(\left(0,4\right)^3=\left(\dfrac{2}{5}\right)^3=\dfrac{2^3}{5^3}=\dfrac{8}{125}\)
\(\left(-0,15\right)^2=\left(-0,15\right)\cdot\left(-0,15\right)=\dfrac{3}{20}\cdot\dfrac{3}{20}=\dfrac{9}{400}\)
\(\left(0,175\right)^0=1\)
\(\left(2\dfrac{1}{4}\right)^2=\left(\dfrac{9}{4}\right)^2=\dfrac{9^2}{4^2}=\dfrac{81}{16}\)
\(\left(-4\dfrac{7}{9}\right)^0=1\)
Bài 1:
\(\left(-\dfrac{4}{5}\right)^2=\left(\dfrac{4}{5}\right)^2=\left(\dfrac{4}{5}\right).\left(\dfrac{4}{5}\right)=\dfrac{16}{25}\)
\(\left(\dfrac{7}{2}\right)^3=\left(\dfrac{7}{2}\right).\left(\dfrac{7}{2}\right).\left(\dfrac{7}{2}\right)=\dfrac{343}{8}\)
