Whakaoti i te 3-sqrt{49}+2(3+4^2)+1/2

$$3 - \sqrt { 49 } + 2 ( 3 + 4 ^ { 2 } ) + 1 / 2$$

Aromātai

$$\frac{69}{2}=34.5$$

Ngā Upane Otinga

Tātaitia te pūtakerua o 49 kia tae ki 7.

$$3-7+2\left(3+4^{2}\right)+\frac{1}{2}$$

Tangohia te 7 i te 3, ka -4.

$$-4+2\left(3+4^{2}\right)+\frac{1}{2}$$

Tātaihia te 4 mā te pū o 2, kia riro ko 16.

$$-4+2\left(3+16\right)+\frac{1}{2}$$

Tāpirihia te 3 ki te 16, ka 19.

$$-4+2\times 19+\frac{1}{2}$$

Whakareatia te 2 ki te 19, ka 38.

$$-4+38+\frac{1}{2}$$

Tāpirihia te -4 ki te 38, ka 34.

$$34+\frac{1}{2}$$

Me tahuri te 34 ki te hautau \frac{68}{2}.

$$\frac{68}{2}+\frac{1}{2}$$

Tā te mea he rite te tauraro o \frac{68}{2} me \frac{1}{2}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{68+1}{2}$$

Tāpirihia te 68 ki te 1, ka 69.

$$\frac{69}{2}$$

Tauwehe

$$\frac{3 \cdot 23}{2} = 34\frac{1}{2} = 34.5$$