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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=-5\left(x^{2}+6x+9\right)-2
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(x+3\right)^{2}.
y=-5x^{2}-30x-45-2
Whakamahia te āhuatanga tohatoha hei whakarea te -5 ki te x^{2}+6x+9.
y=-5x^{2}-30x-47
Tangohia te 2 i te -45, ka -47.