Whakaoti i te (3sqrt{2}+8)(3sqrt{2}-8)

$$(3 \sqrt{ 2 } +8)(3 \sqrt{ 2 } -8)$$

Aromātai

$$-46$$

Ngā Upane Otinga

Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.

$$\left(3\sqrt{2}\right)^{2}-8^{2}$$

Whakarohaina te \left(3\sqrt{2}\right)^{2}.

$$3^{2}\left(\sqrt{2}\right)^{2}-8^{2}$$

Tātaihia te 3 mā te pū o 2, kia riro ko 9.

$$9\left(\sqrt{2}\right)^{2}-8^{2}$$

Ko te pūrua o \sqrt{2} ko 2.

$$9\times 2-8^{2}$$

Whakareatia te 9 ki te 2, ka 18.

$$18-8^{2}$$

Tātaihia te 8 mā te pū o 2, kia riro ko 64.

$$18-64$$

Tangohia te 64 i te 18, ka -46.

$$-46$$

Tauwehe

$$-46$$