Matematika A - 2011. jesen, 13.

A. $9^{3x-2}-7^{6x-4}=09^\{3\; x-2\}-7^\{6\; x-4\}=0$

B. $\mathrm{\mid }x-5\mathrm{\mid }=4|x-5|=4$

c. $\sqrt[3]{x+4}=2\backslash sqrt[3]\{x+4\}=2$

D. $5=(x-1{)}^2-x(x+3)5=(x-1)^\{2\}-x(x+3)$