Question

a,\(\dfrac{8^{20}+4^{20}}{4^{25}+64^5}\)

b,\(\left(1+\dfrac{2}{3}-\dfrac{1}{4}\right).\left(\dfrac{4}{5}-\dfrac{3}{4}\right)^2\)

c,\(23\dfrac{1}{3}:\left(\dfrac{-5}{7}\right)-13\dfrac{1}{3}:\left(\dfrac{-5}{7}\right)\)

d,1:\(\left(\dfrac{2}{3}-\dfrac{3}{4}\right)^2\)

e,\(\dfrac{45^{10}.5^{20}}{75^{15}}\)

Answer 1

e: \(=\dfrac{5^{30}\cdot3^{20}}{3^{15}\cdot5^{30}}=3^5=243\)