Question

вычислите:
1)(0,5)^3*8^7*12^2/6^3*2^15

2)(1/4)^3*9*(5^2)^2/1000*18^7​

Answer 1

$\frac{ (0,5)^3\cdot 8^7\cdot 12^2}{6^3\cdot 2^{15}} =\frac{ (2^{-1})^3\cdot (2^{3})^7\cdot 3^2\cdot 4^2}{2^3\cdot 3^3\cdot 2^{15}} =\frac{ 2^{-3}\cdot (2^{21})\cdot 3^2\cdot 2^4}{ 3^3\cdot 2^{18}} =\frac{ 2^{21-3+4}\cdot 3^2}{ 3^3\cdot 2^{18}} =\frac{ 2^{22}}{ 3\cdot 2^{18}} =\frac{2^4}{3}=\frac{16}{3}$

$\frac{(\frac{1}{4})^3\cdot 9\cdot (5^2)^2}{1000\cdot 18^{7}}= \frac{(2^{-2})^3\cdot 9\cdot (5^2)^2}{2^3\cdot 5^3\cdot 2^{7}\cdot 9^{7}}= \frac{(2^{-6})\cdot 9\cdot 5^4}{2^{3+7}\cdot 5^3\cdot 9^{7}}= \frac{ 5}{2^{16}\cdot 9^{6}}$