Whakaoti i te frac{-12-sqrt{12^2-4-02*7}}{2-02}

$$\frac{ -12- \sqrt{ { 12 }^{ 2 } -4-02 \cdot 7 } }{ 2-02 }$$

Aromātai

$$-\sqrt{35}-6\approx -11.916079783$$

Ngā Upane Otinga

Tātaihia te 12 mā te pū o 2, kia riro ko 144.

$$\frac{-12-\sqrt{144-4-0\times 2\times 7}}{2-0\times 2}$$

Tangohia te 4 i te 144, ka 140.

$$\frac{-12-\sqrt{140-0\times 2\times 7}}{2-0\times 2}$$

Whakareatia te 0 ki te 2, ka 0.

$$\frac{-12-\sqrt{140-0\times 7}}{2-0\times 2}$$

Whakareatia te 0 ki te 7, ka 0.

$$\frac{-12-\sqrt{140-0}}{2-0\times 2}$$

Tangohia te 0 i te 140, ka 140.

$$\frac{-12-\sqrt{140}}{2-0\times 2}$$

Tauwehea te 140=2^{2}\times 35. Tuhia anō te pūtake rua o te hua \sqrt{2^{2}\times 35} hei hua o ngā pūtake rua \sqrt{2^{2}}\sqrt{35}. Tuhia te pūtakerua o te 2^{2}.

$$\frac{-12-2\sqrt{35}}{2-0\times 2}$$

Whakareatia te 0 ki te 2, ka 0.

$$\frac{-12-2\sqrt{35}}{2-0}$$

Tangohia te 0 i te 2, ka 2.

$$\frac{-12-2\sqrt{35}}{2}$$

Whakawehea ia wā o -12-2\sqrt{35} ki te 2, kia riro ko -6-\sqrt{35}.

$$-6-\sqrt{35}$$

Tauwehe

$$-\sqrt{35}-6$$