Issolvi =frac{-2-frac{6sqrt{5}}{5}}{2*(-1/5)}

$$= \frac { - 2 - \frac { 6 \sqrt { 5 } } { 5 } } { 2 \cdot ( - \frac { 1 } { 5 } ) }$$

Evalwa

$$3\sqrt{5}+5\approx 11.708203932$$

Passi Qosra tas-Soluzzjonijiet

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

$$\frac{-\frac{2\times 5}{5}-\frac{6\sqrt{5}}{5}}{2\left(-\frac{1}{5}\right)}$$

Billi -\frac{2\times 5}{5} u \frac{6\sqrt{5}}{5} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

$$\frac{\frac{-2\times 5-6\sqrt{5}}{5}}{2\left(-\frac{1}{5}\right)}$$

Agħmel il-multiplikazzjonijiet fi -2\times 5-6\sqrt{5}.

$$\frac{\frac{-10-6\sqrt{5}}{5}}{2\left(-\frac{1}{5}\right)}$$

Esprimi 2\left(-\frac{1}{5}\right) bħala frazzjoni waħda.

$$\frac{\frac{-10-6\sqrt{5}}{5}}{\frac{2\left(-1\right)}{5}}$$

Immultiplika 2 u -1 biex tikseb -2.

$$\frac{\frac{-10-6\sqrt{5}}{5}}{\frac{-2}{5}}$$

Frazzjoni \frac{-2}{5} tista' tinkiteb mill-ġdid bħala -\frac{2}{5} bl-estrazzjoni tas-sinjal negattiv.

$$\frac{\frac{-10-6\sqrt{5}}{5}}{-\frac{2}{5}}$$

Iddividi \frac{-10-6\sqrt{5}}{5} b'-\frac{2}{5} billi timmultiplika \frac{-10-6\sqrt{5}}{5} bir-reċiproku ta' -\frac{2}{5}.

$$\frac{\left(-10-6\sqrt{5}\right)\times 5}{5\left(-2\right)}$$

Annulla 5 fin-numeratur u d-denominatur.

$$\frac{-6\sqrt{5}-10}{-2}$$

Iddividi kull terminu ta' -6\sqrt{5}-10 b'-2 biex tikseb5+3\sqrt{5}.

$$5+3\sqrt{5}$$

Fattur

$$\sqrt{5} {(\sqrt{5} + 3)} = 11.708203932$$