Whakaoti i te frac{-1+-sqrt{-2^2-4*1*(-3)}}{2.1}

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

Aromātai

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

Ngā Upane Otinga

Tātaihia te 2 mā te pū o 2, kia riro ko 4.

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

Whakareatia te 4 ki te 1, ka 4.

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

Whakareatia te 4 ki te -3, ka -12.

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

Ko te tauaro o -12 ko 12.

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

Tāpirihia te -4 ki te 12, ka 8.

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

Tauwehea te 8=2^{2}\times 2. Tuhia anō te pūtake rua o te hua \sqrt{2^{2}\times 2} hei hua o ngā pūtake rua \sqrt{2^{2}}\sqrt{2}. Tuhia te pūtakerua o te 2^{2}.

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

Tauwehe

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