Whakaoti i te 3(1/2)^3-5(-1/2)^2+5*2^-1-3*2^0

$$3 ( \frac { 1 } { 2 } ) ^ { 3 } - 5 ( - \frac { 1 } { 2 } ) ^ { 2 } + 5 \cdot 2 ^ { - 1 } - 3 \cdot 2 ^ { 0 }$$

Aromātai

$$-\frac{11}{8}=-1.375$$

Ngā Upane Otinga

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

$$3\times \frac{1}{8}-5\left(-\frac{1}{2}\right)^{2}+5\times 2^{-1}-3\times 2^{0}$$

Whakareatia te 3 ki te \frac{1}{8}, ka \frac{3}{8}.

$$\frac{3}{8}-5\left(-\frac{1}{2}\right)^{2}+5\times 2^{-1}-3\times 2^{0}$$

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

$$\frac{3}{8}-5\times \frac{1}{4}+5\times 2^{-1}-3\times 2^{0}$$

Whakareatia te 5 ki te \frac{1}{4}, ka \frac{5}{4}.

$$\frac{3}{8}-\frac{5}{4}+5\times 2^{-1}-3\times 2^{0}$$

Tangohia te \frac{5}{4} i te \frac{3}{8}, ka -\frac{7}{8}.

$$-\frac{7}{8}+5\times 2^{-1}-3\times 2^{0}$$

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

$$-\frac{7}{8}+5\times \frac{1}{2}-3\times 2^{0}$$

Whakareatia te 5 ki te \frac{1}{2}, ka \frac{5}{2}.

$$-\frac{7}{8}+\frac{5}{2}-3\times 2^{0}$$

Tāpirihia te -\frac{7}{8} ki te \frac{5}{2}, ka \frac{13}{8}.

$$\frac{13}{8}-3\times 2^{0}$$

Tātaihia te 2 mā te pū o 0, kia riro ko 1.

$$\frac{13}{8}-3\times 1$$

Whakareatia te 3 ki te 1, ka 3.

$$\frac{13}{8}-3$$

Tangohia te 3 i te \frac{13}{8}, ka -\frac{11}{8}.

$$-\frac{11}{8}$$

Tauwehe

$$-\frac{11}{8} = -1\frac{3}{8} = -1.375$$