$$ \begin{align*} \textbf{Izračunaj ove izraze } \\ &\ a) X^{2} - X \sqrt{X^{2}- §§V7(5,20,1)§§ X+5} = §§V0(1,20,1)§§ X ^{2}\\ &\ b) X^{2} - §§V0(1,20,1)§§ x + \sqrt{x^{2}-2x+ §§V1(1,50,1)§§ } = 0\\ &\ c) \binom{21}{x}\sum_{x}^{x+12} ( X+2X - §§V2(5,20,1)§§ )\\ &\ d) X^{3} - §§V2(3,33,3)§§ X - §§V2(5,20,1)§§ \\ &\ Marko <br> Darko \end{align*} $$