Whakaoti i te -3f(-3)=-2x^2(-3)+5(-3)

$$- 3 f ( - 3 ) = - 2 x ^ { 2 } ( - 3 ) + 5 ( - 3 )$$

Whakaoti mō f

$$f=\frac{2x^{2}-5}{3}$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te -3 ki te -3, ka 9.

$$9f=-2x^{2}\left(-3\right)+5\left(-3\right)$$

Whakareatia te -2 ki te -3, ka 6.

$$9f=6x^{2}+5\left(-3\right)$$

Whakareatia te 5 ki te -3, ka -15.

$$9f=6x^{2}-15$$

Whakawehea ngā taha e rua ki te 9.

$$\frac{9f}{9}=\frac{6x^{2}-15}{9}$$

Mā te whakawehe ki te 9 ka wetekia te whakareanga ki te 9.

$$f=\frac{6x^{2}-15}{9}$$

Whakawehe 6x^{2}-15 ki te 9.

$$f=\frac{2x^{2}-5}{3}$$

Whakaoti mō x (complex solution)

$$x=-\frac{\sqrt{6f+10}}{2}$$

$$x=\frac{\sqrt{6f+10}}{2}$$

Whakaoti mō x

$$x=\frac{\sqrt{6f+10}}{2}$$

$$x=-\frac{\sqrt{6f+10}}{2}\text{, }f\geq -\frac{5}{3}$$