Whakaoti i te y=sqrt{9^2}+b_2^2

$$y = \sqrt { 9 ^ { 2 } } + b _ { 2 } ^ { 2 }$$

Whakaoti mō y

$$y=b_{2}^{2}+9$$

Ngā Upane Otinga

Tātaihia te 9 mā te pū o 2, kia riro ko 81.

$$y=\sqrt{81}+b_{2}^{2}$$

Tātaitia te pūtakerua o 81 kia tae ki 9.

$$y=9+b_{2}^{2}$$

Whakaoti mō b_2 (complex solution)

$$b_{2}=-\sqrt{y-9}$$

$$b_{2}=\sqrt{y-9}$$

Whakaoti mō b_2

$$b_{2}=\sqrt{y-9}$$

$$b_{2}=-\sqrt{y-9}\text{, }y\geq 9$$