Whakaoti i te 168=v^2

$$168 = v ^ { 2 }$$

Whakaoti mō v

$$v=2\sqrt{42}\approx 12.961481397$$

$$v=-2\sqrt{42}\approx -12.961481397$$

Ngā Upane mā te Kimi Pūtakerua

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$v^{2}=168$$

Tuhia te pūtakerua o ngā taha e rua o te whārite.

$$v=2\sqrt{42} v=-2\sqrt{42}$$

Ngā Upane e Whakamahi ana i te Tikanga Tātai Pūrua

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$v^{2}=168$$

Tangohia te 168 mai i ngā taha e rua.

$$v^{2}-168=0$$

Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 1 mō a, 0 mō b, me -168 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.

$$v=\frac{0±\sqrt{0^{2}-4\left(-168\right)}}{2}$$

Pūrua 0.

$$v=\frac{0±\sqrt{-4\left(-168\right)}}{2}$$

Whakareatia -4 ki te -168.

$$v=\frac{0±\sqrt{672}}{2}$$

Tuhia te pūtakerua o te 672.

$$v=\frac{0±4\sqrt{42}}{2}$$

Nā, me whakaoti te whārite v=\frac{0±4\sqrt{42}}{2} ina he tāpiri te ±.

$$v=2\sqrt{42}$$

Nā, me whakaoti te whārite v=\frac{0±4\sqrt{42}}{2} ina he tango te ±.

$$v=-2\sqrt{42}$$

Kua oti te whārite te whakatau.

$$v=2\sqrt{42} v=-2\sqrt{42}$$