Whakaoti mō x_2
x_{2}=16
Tohaina
Kua tāruatia ki te papatopenga
x_{2}-1=5\sqrt{4}+5
Whakareatia ngā taha e rua o te whārite ki te 5.
x_{2}-1=5\times 2+5
Tātaitia te pūtakerua o 4 kia tae ki 2.
x_{2}-1=10+5
Whakareatia te 5 ki te 2, ka 10.
x_{2}-1=15
Tāpirihia te 10 ki te 5, ka 15.
x_{2}=15+1
Me tāpiri te 1 ki ngā taha e rua.
x_{2}=16
Tāpirihia te 15 ki te 1, ka 16.
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