Question

rút gọn các phân số

a,2³/2⁴ b,3⁵/3⁴ c,4⁷/4¹⁰ d,5¹¹/5⁸ e,6²/4²

Answer 1

a) \(\frac{2^3}{2^4}=\frac{2^3}{2^3.2}=\frac{1}{2}\)

b) \(\frac{3^5}{3^4}=\frac{3^4.3}{3^4}=3\)

c) \(\frac{4^7}{4^{10}}=\frac{4^7}{4^7.4^3}=\frac{1}{4^3}=\frac{1}{64}\)

d) \(\frac{5^{11}}{5^8}=\frac{5^8.5^3}{5^8}=5^3=125\)

e) \(\frac{6^2}{4^2}=\frac{2^2.3^2}{\left(2^2\right)^2}=\frac{3^2}{2^2}=\frac{9}{4}\)

Answer 2

a) \(\frac{2^3}{2^4}\)= \(\frac{8}{16}\)= \(\frac{1}{2}\)

b) \(\frac{3^5}{3^4}\)= \(\frac{243}{81}\)= \(\frac{3}{1}\)= 3