$$ \begin{align*} \textbf{Izračunaj ove izraze } \\ &\ a) \frac{ §§V1(-10,10,1)§§ x^{2}+ §§V2(1,5,1)§§ x - §§V3(1,50,1)§§ }{(x- §§V1(1,10,1)§§ )^{2}}= 0 \\ &\ b) \frac{ §§V3(-10,10,1)§§ x^{2}+ §§V4(1,5,1)§§ x - §§V5(1,50,1)§§ }{(x- §§V6(1,10,1)§§ )^{2}}= 0 = 0 \\ &\ c) \binom{21}{x}\sum_{x}^{x+12} ( X+2X - 2x \cdot §§V2(5,20,1)§§ ) \\ &\ d) X^{3} - §§V2(3,33,3)§§ X - §§V2(5,20,1)§§ + §§V3(2,12,2)§§ X^{2}-\frac{1}{ §§V5(1,10,1)§§ } X^{2} = 0 \\ &\ \end{align*} $$