Question

giúp mik đi ạ

Answer 1

a: \(\left(-\frac13\right)^3=\frac{\left(-1\right)^3}{3^3}=-\frac{1}{27}\)

\(\left(-\frac23\right)^3=\frac{\left(-2\right)^3}{3^3}=-\frac{8}{27}\)

\(\left(-1\frac34\right)^2=\left(-\frac74\right)^2=\frac{49}{16}\)

\(\left(-0,6\right)^4=\left(-\frac35\right)^4=\left(\frac35\right)^4=\frac{3^4}{5^4}=\frac{81}{625}\)

\(\left(-1,56\right)^0=1\)

b:

i: \(2\cdot16\cdot8=2\cdot2^4\cdot2^3=2^8\)

ii: \(49\cdot7\cdot343=7^2\cdot7\cdot7^3=7^6\)

iii: \(\frac34\cdot\frac{9}{16}\cdot\frac{27}{64}=\frac34\cdot\left(\frac34\right)^2\cdot\left(\frac34\right)^3=\left(\frac34\right)^6\)