Whakaoti mō r
r=13
Tohaina
Kua tāruatia ki te papatopenga
-2r=-36+10
Me tāpiri te 10 ki ngā taha e rua.
-2r=-26
Tāpirihia te -36 ki te 10, ka -26.
r=\frac{-26}{-2}
Whakawehea ngā taha e rua ki te -2.
r=13
Whakawehea te -26 ki te -2, kia riro ko 13.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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