Whakaoti i te x^2+8b+15.5=0

$$x ^ { 2 } + 8 b + 15.5 = 0$$

Whakaoti mō b

$$b=-\frac{x^{2}}{8}-1.9375$$

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.

$$8b+15.5=-x^{2}$$

Tangohia te 15.5 mai i ngā taha e rua.

$$8b=-x^{2}-15.5$$

Whakawehea ngā taha e rua ki te 8.

$$\frac{8b}{8}=\frac{-x^{2}-15.5}{8}$$

Mā te whakawehe ki te 8 ka wetekia te whakareanga ki te 8.

$$b=\frac{-x^{2}-15.5}{8}$$

Whakawehe -x^{2}-15.5 ki te 8.

$$b=-\frac{x^{2}}{8}-\frac{31}{16}$$

Whakaoti mō x (complex solution)

$$x=-\sqrt{-8b-15.5}$$

$$x=\sqrt{-8b-15.5}$$

Whakaoti mō x

$$x=\frac{\sqrt{-32b-62}}{2}$$

$$x=-\frac{\sqrt{-32b-62}}{2}\text{, }b\leq -\frac{31}{16}$$