Issolvi +4+-frac{sqrt{4^2-4(2)(1)}}{2(2)}

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

Evalwa

$$-\frac{\sqrt{2}}{2}+4\approx 3.292893219$$

Passi tas-Soluzzjonijiet

Ikkalkula 4 bil-power ta' 2 u tikseb 16.

$$4-\frac{\sqrt{16-4\times 2\times 1}}{2\times 2}$$

Immultiplika 4 u 2 biex tikseb 8.

$$4-\frac{\sqrt{16-8\times 1}}{2\times 2}$$

Immultiplika 8 u 1 biex tikseb 8.

$$4-\frac{\sqrt{16-8}}{2\times 2}$$

Naqqas 8 minn 16 biex tikseb 8.

$$4-\frac{\sqrt{8}}{2\times 2}$$

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}.

$$4-\frac{2\sqrt{2}}{2\times 2}$$

Immultiplika 2 u 2 biex tikseb 4.

$$4-\frac{2\sqrt{2}}{4}$$

Iddividi 2\sqrt{2} b'4 biex tikseb\frac{1}{2}\sqrt{2}.

$$4-\frac{1}{2}\sqrt{2}$$

Fattur

$$\frac{8 - \sqrt{2}}{2} = 3.2928932188134525$$