Question

5 elevado a 0 +(0,25) elevado a dois negativo -(0,5) elevado a dois negativo -2 elevado a 4

Answer 1

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$5^0+(0,25)^{-2}-(0,5)^{-2}-2^4= \\ \\ 5^0+( \frac{25}{100} )^{-2}-( \frac{5}{10} )^{-2}-2^4= \\ \\ 5^0+( \frac{1}{4} )^{-2}-( \frac{1}{2} )^{-2}-2^4= \\ \\ 5^0+(4)^2-(2)^2-2^4= \\ \\ 1+\not16-4-\not16= \\ \\ 1-4=-3$