Whakaoti i te -9^2/2+9(-9/2)+18

$$- \frac { 9 ^ { 2 } } { 2 } + 9 ( - \frac { 9 } { 2 } ) + 18$$

Aromātai

$$-63$$

Ngā Upane Otinga

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

$$-\frac{81}{2}+9\left(-\frac{9}{2}\right)+18$$

Tuhia te 9\left(-\frac{9}{2}\right) hei hautanga kotahi.

$$-\frac{81}{2}+\frac{9\left(-9\right)}{2}+18$$

Whakareatia te 9 ki te -9, ka -81.

$$-\frac{81}{2}+\frac{-81}{2}+18$$

Ka taea te hautanga \frac{-81}{2} te tuhi anō ko -\frac{81}{2} mā te tango i te tohu tōraro.

$$-\frac{81}{2}-\frac{81}{2}+18$$

Tā te mea he rite te tauraro o -\frac{81}{2} me \frac{81}{2}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{-81-81}{2}+18$$

Tangohia te 81 i te -81, ka -162.

$$\frac{-162}{2}+18$$

Whakawehea te -162 ki te 2, kia riro ko -81.

$$-81+18$$

Tāpirihia te -81 ki te 18, ka -63.

$$-63$$

Tauwehe

$$-63$$