basic properties of quadratic equation
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A quadratic function is a function whose rule may be written in the form f(x) = ax2 + bx + c where a, b, and c are real numbers and a is not zero.
The graph of a quadratic function is a parabola(a plane curve) which opens up if a > 0 and opens down if a < 0.
The graph of a quadratic function is a parabola(a plane curve) which opens up if a > 0 and opens down if a < 0.
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