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

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

Aromātai

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

Ngā Upane Otinga

Tātaihia te 4 mā te pū o 2, kia riro ko 16.

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

Whakareatia te 4 ki te 2, ka 8.

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

Whakareatia te 8 ki te 1, ka 8.

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

Tangohia te 8 i te 16, ka 8.

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

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}.

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

Whakareatia te 2 ki te 2, ka 4.

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

Whakawehea te 2\sqrt{2} ki te 4, kia riro ko \frac{1}{2}\sqrt{2}.

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

Tauwehe

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