Whakaoti i te (1/2)^3+2(1/2)^2+8

$$( \frac { 1 } { 2 } ) ^ { 3 } + 2 ( \frac { 1 } { 2 } ) ^ { 2 } + 8$$

Aromātai

$$\frac{69}{8}=8.625$$

Ngā Upane Otinga

Tātaihia te \frac{1}{2} mā te pū o 3, kia riro ko \frac{1}{8}.

$$\frac{1}{8}+2\times \left(\frac{1}{2}\right)^{2}+8$$

Tātaihia te \frac{1}{2} mā te pū o 2, kia riro ko \frac{1}{4}.

$$\frac{1}{8}+2\times \frac{1}{4}+8$$

Whakareatia te 2 ki te \frac{1}{4}, ka \frac{2}{4}.

$$\frac{1}{8}+\frac{2}{4}+8$$

Whakahekea te hautanga \frac{2}{4} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{1}{8}+\frac{1}{2}+8$$

Ko te maha noa iti rawa atu o 8 me 2 ko 8. Me tahuri \frac{1}{8} me \frac{1}{2} ki te hautau me te tautūnga 8.

$$\frac{1}{8}+\frac{4}{8}+8$$

Tā te mea he rite te tauraro o \frac{1}{8} me \frac{4}{8}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{1+4}{8}+8$$

Tāpirihia te 1 ki te 4, ka 5.

$$\frac{5}{8}+8$$

Me tahuri te 8 ki te hautau \frac{64}{8}.

$$\frac{5}{8}+\frac{64}{8}$$

Tā te mea he rite te tauraro o \frac{5}{8} me \frac{64}{8}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{5+64}{8}$$

Tāpirihia te 5 ki te 64, ka 69.

$$\frac{69}{8}$$

Tauwehe

$$\frac{3 \cdot 23}{2 ^ {3}} = 8\frac{5}{8} = 8.625$$