Whakaoti mō s
s=-1.5
Tohaina
Kua tāruatia ki te papatopenga
0.5s+1-4.5s=7
Tangohia te 4.5s mai i ngā taha e rua.
-4s+1=7
Pahekotia te 0.5s me -4.5s, ka -4s.
-4s=7-1
Tangohia te 1 mai i ngā taha e rua.
-4s=6
Tangohia te 1 i te 7, ka 6.
s=\frac{6}{-4}
Whakawehea ngā taha e rua ki te -4.
s=-\frac{3}{2}
Whakahekea te hautanga \frac{6}{-4} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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