Whakaoti mō z
z=0.5
Tohaina
Kua tāruatia ki te papatopenga
-3.6z+1.3=0.2z-0.6
Whakamahia te āhuatanga tohatoha hei whakarea te 0.2 ki te z-3.
-3.6z+1.3-0.2z=-0.6
Tangohia te 0.2z mai i ngā taha e rua.
-3.8z+1.3=-0.6
Pahekotia te -3.6z me -0.2z, ka -3.8z.
-3.8z=-0.6-1.3
Tangohia te 1.3 mai i ngā taha e rua.
-3.8z=-1.9
Tangohia te 1.3 i te -0.6, ka -1.9.
z=\frac{-1.9}{-3.8}
Whakawehea ngā taha e rua ki te -3.8.
z=\frac{-19}{-38}
Whakarohaina te \frac{-1.9}{-3.8} mā te whakarea i te taurunga me te tauraro ki te 10.
z=\frac{1}{2}
Whakahekea te hautanga \frac{-19}{-38} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -19.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
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