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Whakaoti mō y
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Whakaoti mō x (complex solution)
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Whakaoti mō x
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Tohaina

y=-119-8x+\frac{\frac{5x}{20}}{100}x+1600
Tangohia te 120 i te 1, ka -119.
y=-119-8x+\frac{\frac{1}{4}x}{100}x+1600
Whakawehea te 5x ki te 20, kia riro ko \frac{1}{4}x.
y=-119-8x+\frac{1}{400}xx+1600
Whakawehea te \frac{1}{4}x ki te 100, kia riro ko \frac{1}{400}x.
y=-119-8x+\frac{1}{400}x^{2}+1600
Whakareatia te x ki te x, ka x^{2}.
y=1481-8x+\frac{1}{400}x^{2}
Tāpirihia te -119 ki te 1600, ka 1481.