Hello,
The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero. Therefore, to find the roots of a quadratic function, we set f (x) = 0, and solve the equation,
Thus the roots of equation are (-b+-D) /2a, where D=(b^2-4ac) ^(1/2)
Hope that helps!
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