Question

плиз помогите (-0,5)^-4 -625^0,25 - ( 2 14)^-1 + 19(-3)^-3

Answer 1

$(-0,5)^{-4} -625^{0,25} - ( 2 1:4)^{-1} + 19(-3)^{-3}= \ \ (-frac{1}{2})^{-4}-(5^4) ^{ frac{1}{4} }- frac{4}{21}+ frac{19}{(-3)^3}=(-2)^4-5- frac{4}{21}- frac{19}{27}= \ \ 16-5-frac{4}{21}- frac{19}{27}=10 frac{17}{21}- frac{19}{27}= \ \ 10 frac{17*9-19*7}{189}=10 frac{153-133}{189}=10 frac{20}{189}$