Issolvi =sqrt{8}-2sin45^circ+(1/2)^-1

$$= \sqrt { 8 } - 2 \sin 45 ^ { \circ } + ( \frac { 1 } { 2 } ) ^ { - 1 }$$

Evalwa

$$\sqrt{2}+2\approx 3.414213562$$

Passi tas-Soluzzjonijiet

Iffattura 8=2^{2}\times 2. Erġa' ikteb l-għerq kwadrat tal-prodott \sqrt{2^{2}\times 2} bħala l-prodott tal-għeruq kwadrati \sqrt{2^{2}}\sqrt{2}. Ħu l-għerq kwadrat ta' 2^{2}.

$$2\sqrt{2}-2\sin(45)+\left(\frac{1}{2}\right)^{-1}$$

Ikseb il-valur ta’ \sin(45) mit-tabella tal-valuri trigonometriċi.

$$2\sqrt{2}-2\times \frac{\sqrt{2}}{2}+\left(\frac{1}{2}\right)^{-1}$$

Annulla 2 u 2.

$$2\sqrt{2}-\sqrt{2}+\left(\frac{1}{2}\right)^{-1}$$

Ikkombina 2\sqrt{2} u -\sqrt{2} biex tikseb \sqrt{2}.

$$\sqrt{2}+\left(\frac{1}{2}\right)^{-1}$$

Ikkalkula \frac{1}{2} bil-power ta' -1 u tikseb 2.

$$\sqrt{2}+2$$