Question

Tính :

a) (-1/8)^9 . 8^9

b) (60/15)^4

c) (-0,125)^4 . 4096

d)5^4 . 125 . (2,5)^ -5 . 0,04

giúp mk vs

Answer 1

Answer 2

Answer 3

\(a,\left(\dfrac{-1}{8}\right)^9.8^9\)
\(=\left(\dfrac{-1}{8}.8\right)^9\)
\(=\left(-1\right)^9\)
\(=-1\)
\(b,\left(\dfrac{60}{15}\right)^4\)
\(=4^4\)
\(c,\left(-0,125\right)^4.4096\)
\(=\left(-0,125\right)^4.8^4\)
\(=\left(-0,125.8\right)^4\)
\(=\left(-1\right)^4\)
\(=-1\)
\(d,5^4.125.\left(2,5\right)^{-5}.0,04\)
\(=5^4.5^3.\left(\dfrac{5}{2}\right)^{-5}.0,2^2\)
\(=5^4.5^3.\left(\dfrac{2}{5}\right)^5.\dfrac{1}{5^2}\)
\(=5^7.\dfrac{2^5}{5^5}.\dfrac{1}{5^2}\)
\(=5^7.\dfrac{32}{5^7}\)
\(=32\)