Whakaoti i te (2a+175)2=75

$$( 2 a + 175 ) 2 = 75$$

Whakaoti mō a

$$a = -\frac{275}{4} = -68\frac{3}{4} = -68.75$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakawehea ngā taha e rua ki te 2.

$$2a+175=\frac{75}{2}$$

Tangohia te 175 mai i ngā taha e rua.

$$2a=\frac{75}{2}-175$$

Me tahuri te 175 ki te hautau \frac{350}{2}.

$$2a=\frac{75}{2}-\frac{350}{2}$$

Tā te mea he rite te tauraro o \frac{75}{2} me \frac{350}{2}, me tango rāua mā te tango i ō raua taurunga.

$$2a=\frac{75-350}{2}$$

Tangohia te 350 i te 75, ka -275.

$$2a=-\frac{275}{2}$$

Whakawehea ngā taha e rua ki te 2.

$$a=\frac{-\frac{275}{2}}{2}$$

Tuhia te \frac{-\frac{275}{2}}{2} hei hautanga kotahi.

$$a=\frac{-275}{2\times 2}$$

Whakareatia te 2 ki te 2, ka 4.

$$a=\frac{-275}{4}$$

Ka taea te hautanga \frac{-275}{4} te tuhi anō ko -\frac{275}{4} mā te tango i te tohu tōraro.

$$a=-\frac{275}{4}$$