Whakaoti mō k
k=-1
Tohaina
Kua tāruatia ki te papatopenga
4-k=5\left(k+2\right)
Tē taea kia ōrite te tāupe k ki -2 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 3\left(k+2\right), arā, te tauraro pātahi he tino iti rawa te kitea o 3\left(k+2\right),3.
4-k=5k+10
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te k+2.
4-k-5k=10
Tangohia te 5k mai i ngā taha e rua.
-k-5k=10-4
Tangohia te 4 mai i ngā taha e rua.
-k-5k=6
Tangohia te 4 i te 10, ka 6.
-6k=6
Pahekotia te -k me -5k, ka -6k.
k=\frac{6}{-6}
Whakawehea ngā taha e rua ki te -6.
k=-1
Whakawehea te 6 ki te -6, kia riro ko -1.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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