Whakaoti i te 49=165-2*10*sqrt{65}*x

$$49=165-2 \times 10 \times \sqrt{ 65 } \times x$$

Whakaoti mō x

$$x=\frac{29\sqrt{65}}{325}\approx 0.719401461$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 2 ki te 10, ka 20.

$$49=165-20\sqrt{65}x$$

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

$$165-20\sqrt{65}x=49$$

Tangohia te 165 mai i ngā taha e rua.

$$-20\sqrt{65}x=49-165$$

Tangohia te 165 i te 49, ka -116.

$$-20\sqrt{65}x=-116$$

He hanga arowhānui tō te whārite.

$$\left(-20\sqrt{65}\right)x=-116$$

Whakawehea ngā taha e rua ki te -20\sqrt{65}.

$$\frac{\left(-20\sqrt{65}\right)x}{-20\sqrt{65}}=-\frac{116}{-20\sqrt{65}}$$

Mā te whakawehe ki te -20\sqrt{65} ka wetekia te whakareanga ki te -20\sqrt{65}.

$$x=-\frac{116}{-20\sqrt{65}}$$

Whakawehe -116 ki te -20\sqrt{65}.

$$x=\frac{29\sqrt{65}}{325}$$