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Beginning with the quadratic equation y=ax to the power of 2 + bx+c , Fred calculated -b/2a and then plugged that number in for X to get a Y. What is one reason he might have done this?
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Beginning with the quadratic equation y=ax to the power of 2 + bx+c , Fred calculated -b/2a and then plugged that number in for X to get a Y. What is one reason he might have done this?

User Alan Dyke
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To find the vertex of the parabola.
User Herobrine
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