Issolvi 1/sqrt{(0)+5}-(4(0)+2)

$$\frac { 1 } { \sqrt { ( 0 ) + 5 } } - ( 4 ( 0 ) + 2 )$$

Evalwa

$$\frac{\sqrt{5}}{5}-2\approx -1.552786405$$

Passi Qosra tas-Soluzzjonijiet

Żid 0 u 5 biex tikseb 5.

$$\frac{1}{\sqrt{5}}-\left(4\times 0+2\right)$$

Irrazzjonalizza d-denominatur tal-\frac{1}{\sqrt{5}} billi timmultiplika in-numeratur u d-denominatur mill-\sqrt{5}.

$$\frac{\sqrt{5}}{\left(\sqrt{5}\right)^{2}}-\left(4\times 0+2\right)$$

Il-kwadrat ta' \sqrt{5} huwa 5.

$$\frac{\sqrt{5}}{5}-\left(4\times 0+2\right)$$

Immultiplika 4 u 0 biex tikseb 0.

$$\frac{\sqrt{5}}{5}-\left(0+2\right)$$

Żid 0 u 2 biex tikseb 2.

$$\frac{\sqrt{5}}{5}-2$$

Biex iżżid jew tnaqqas l-espressjonijiet, espandihom biex id-denominaturi tagħhom ikunu l-istess. Immultiplika 2 b'\frac{5}{5}.

$$\frac{\sqrt{5}}{5}-\frac{2\times 5}{5}$$

Billi \frac{\sqrt{5}}{5} u \frac{2\times 5}{5} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$\frac{\sqrt{5}-2\times 5}{5}$$

Agħmel il-multiplikazzjonijiet fi \sqrt{5}-2\times 5.

$$\frac{\sqrt{5}-10}{5}$$