Issolvi frac{-1+-sqrt{-2^2-4*1*(-3)}}{2.1}

$$\frac{ -1+- \sqrt{ - { 2 }^{ 2 } -4 \times 1 \times (-3) } }{ 2.1 }$$

Evalwa

$$\frac{-20\sqrt{2}-10}{21}\approx -1.823060536$$

Passi tas-Soluzzjonijiet

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

$$\frac{-1-\sqrt{-4-4\times 1\left(-3\right)}}{2.1}$$

Immultiplika 4 u 1 biex tikseb 4.

$$\frac{-1-\sqrt{-4-4\left(-3\right)}}{2.1}$$

Immultiplika 4 u -3 biex tikseb -12.

$$\frac{-1-\sqrt{-4-\left(-12\right)}}{2.1}$$

L-oppost ta' -12 huwa 12.

$$\frac{-1-\sqrt{-4+12}}{2.1}$$

Żid -4 u 12 biex tikseb 8.

$$\frac{-1-\sqrt{8}}{2.1}$$

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}.

$$\frac{-1-2\sqrt{2}}{2.1}$$

Fattur

$$\frac{10 {(-2 \sqrt{2} - 1)}}{21} = -1.823060535593424$$