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roots represent the x values at which any parabola, explicitly given as y = ax2 + bx + c, crosses the x-axis. As well as being a formula that will yield the

{\displaystyle y-y_{1}={\frac {y_{2}-y_{1}}{x_{2}-x_{1}}}(x-x_{1}),\,} where (x1, y1) and (x2, y2) are two points on the line with x2 ≠ x1. This is equivalent

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