Matematika A - 2013. ljeto, 11.

A. $\mathrm{\mid }x+1.5\mathrm{\mid }=1|x+1.5|=1$

B. $\frac{2x-1}{3x-1}=\frac{2x}{3x+1}\backslash frac\{2\; x-1\}\{3\; x-1\}=\backslash frac\{2\; x\}\{3\; x+1\}$

C. $\sqrt{x^2+2x-7}=x\backslash sqrt\{x^\{2\}+2\; x-7\}=x$

D. ${\log }_3(5x+4)=0\backslash log\; \_\{3\}(5\; x+4)=0$