Whakaoti i te x^2+4x-y+9=0

$$x ^ { 2 } + 4 x - y + 9 = 0$$

Whakaoti mō y

$$y=x^{2}+4x+9$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te x^{2} mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.

$$4x-y+9=-x^{2}$$

Tangohia te 4x mai i ngā taha e rua.

$$-y+9=-x^{2}-4x$$

Tangohia te 9 mai i ngā taha e rua.

$$-y=-x^{2}-4x-9$$

Whakawehea ngā taha e rua ki te -1.

$$\frac{-y}{-1}=\frac{-x^{2}-4x-9}{-1}$$

Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.

$$y=\frac{-x^{2}-4x-9}{-1}$$

Whakawehe -x^{2}-4x-9 ki te -1.

$$y=x^{2}+4x+9$$

Whakaoti mō x (complex solution)

$$x=\sqrt{y-5}-2$$

$$x=-\sqrt{y-5}-2$$

Whakaoti mō x

$$x=\sqrt{y-5}-2$$

$$x=-\sqrt{y-5}-2\text{, }y\geq 5$$