Question

tinh

(3/7)mu 20/(9/49)mu 5

Answer 1

(3/7)²⁰/(9/49)⁵=(3/7)²⁰/(3²/7²)⁵=(3/7)²⁰(3/7)¹⁰=(3/7)¹⁰

Answer 2

\(\dfrac{\left(\dfrac{3}{7}\right)^{20}}{\dfrac{9}{49}^5}=\dfrac{\left(\dfrac{3}{7}\right)^{20}}{\left(\dfrac{3}{7}\right)2^5}=\dfrac{\left(\dfrac{3}{7}\right)20}{\left(\dfrac{3}{7}\right)^{10}}=\dfrac{3}{7}^{10}\)