Whakaoti mō k
k=11
Tohaina
Kua tāruatia ki te papatopenga
-4k-20=-6k+2
Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te k+5.
-4k-20+6k=2
Me tāpiri te 6k ki ngā taha e rua.
2k-20=2
Pahekotia te -4k me 6k, ka 2k.
2k=2+20
Me tāpiri te 20 ki ngā taha e rua.
2k=22
Tāpirihia te 2 ki te 20, ka 22.
k=\frac{22}{2}
Whakawehea ngā taha e rua ki te 2.
k=11
Whakawehea te 22 ki te 2, kia riro ko 11.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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