a) $\sqrt{x}-16 = 0$ $\sqrt{x} = 16$ $x = 16^{2}$ => $x=256$ | b) $2\sqrt{x} = 1,5$ $\sqrt{x} = 1,5 : 2$ $\sqrt{x} = 0,75$ $x=(0,75)^{2}$ => $x=0,5625$ | c)$\sqrt{x+4}-0,6=2,4$ $\sqrt{x+4} = 2,4 + 0,6$ $\sqrt{x+4} = 3$ $x + 4 = 9$ => $x=5$ |
a) $\sqrt{x}-16 = 0$ $\sqrt{x} = 16$ $x = 16^{2}$ => $x=256$ | b) $2\sqrt{x} = 1,5$ $\sqrt{x} = 1,5 : 2$ $\sqrt{x} = 0,75$ $x=(0,75)^{2}$ => $x=0,5625$ | c)$\sqrt{x+4}-0,6=2,4$ $\sqrt{x+4} = 2,4 + 0,6$ $\sqrt{x+4} = 3$ $x + 4 = 9$ => $x=5$ |