Whakaoti mō z
z\leq \frac{167}{19}
Tohaina
Kua tāruatia ki te papatopenga
1.9z\leq 18.2-1.5
Tangohia te 1.5 mai i ngā taha e rua.
1.9z\leq 16.7
Tangohia te 1.5 i te 18.2, ka 16.7.
z\leq \frac{16.7}{1.9}
Whakawehea ngā taha e rua ki te 1.9. I te mea he tōrunga te 1.9, kāore e huri te ahunga koreōrite.
z\leq \frac{167}{19}
Whakarohaina te \frac{16.7}{1.9} mā te whakarea i te taurunga me te tauraro ki te 10.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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