Whakaoti i te (sqrt{1-0,19}+0,3^2-6/25)*(-3)

$$( \sqrt { 1 - 0,19 } + 0,3 ^ { 2 } - \frac { 6 } { 25 } ) \cdot ( - 3 )$$

Aromātai

$$-2.25$$

Ngā Upane Otinga

Tangohia te 0.19 i te 1, ka 0.81.

$$\left(\sqrt{0.81}+0.3^{2}-\frac{6}{25}\right)\left(-3\right)$$

Tātaitia te pūtakerua o 0.81 kia tae ki 0.9.

$$\left(0.9+0.3^{2}-\frac{6}{25}\right)\left(-3\right)$$

Tātaihia te 0.3 mā te pū o 2, kia riro ko 0.09.

$$\left(0.9+0.09-\frac{6}{25}\right)\left(-3\right)$$

Tāpirihia te 0.9 ki te 0.09, ka 0.99.

$$\left(0.99-\frac{6}{25}\right)\left(-3\right)$$

Me tahuri ki tau ā-ira 0.99 ki te hautau \frac{99}{100}.

$$\left(\frac{99}{100}-\frac{6}{25}\right)\left(-3\right)$$

Ko te maha noa iti rawa atu o 100 me 25 ko 100. Me tahuri \frac{99}{100} me \frac{6}{25} ki te hautau me te tautūnga 100.

$$\left(\frac{99}{100}-\frac{24}{100}\right)\left(-3\right)$$

Tā te mea he rite te tauraro o \frac{99}{100} me \frac{24}{100}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{99-24}{100}\left(-3\right)$$

Tangohia te 24 i te 99, ka 75.

$$\frac{75}{100}\left(-3\right)$$

Whakahekea te hautanga \frac{75}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 25.

$$\frac{3}{4}\left(-3\right)$$

Tuhia te \frac{3}{4}\left(-3\right) hei hautanga kotahi.

$$\frac{3\left(-3\right)}{4}$$

Whakareatia te 3 ki te -3, ka -9.

$$\frac{-9}{4}$$

Ka taea te hautanga \frac{-9}{4} te tuhi anō ko -\frac{9}{4} mā te tango i te tohu tōraro.

$$-\frac{9}{4}$$

Tauwehe

$$-2.25$$