Oblicz 4,5+(1/2)¯²*[ 1 1/4 : (4/5)¯¹-( 34/35) do potęgi 0] - 6 * (2/3)¯²
4,5+(\frac{1}{2})^{-2}*[1\frac{1}{4}: (\frac{4}{5})^{-1}-(\frac{34}{35})^0]-6*(\frac{2}{3})^{-2}
=4,5+2^2*[\frac{5}{4}: \frac{5}{4}-1]-6*\frac{9}{4}=
4,5+4*0-\frac{27}{2}=4,5-13,5=- 9