Whakaoti mō v
v=0.4
Tohaina
Kua tāruatia ki te papatopenga
4.8-2v=4
Whakareatia te 3 ki te 1.6, ka 4.8.
-2v=4-4.8
Tangohia te 4.8 mai i ngā taha e rua.
-2v=-0.8
Tangohia te 4.8 i te 4, ka -0.8.
v=\frac{-0.8}{-2}
Whakawehea ngā taha e rua ki te -2.
v=\frac{-8}{-20}
Whakarohaina te \frac{-0.8}{-2} mā te whakarea i te taurunga me te tauraro ki te 10.
v=\frac{2}{5}
Whakahekea te hautanga \frac{-8}{-20} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -4.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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