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(Algebra: solve quadratic equations) Write a method for solving a quadratic equation using the following header:
public static int solveQuadratic(double[] eqn, double[] roots)
The coefficients of a quadratic equation ax2 + bx + c = 0 are passed to the array eqn and the real roots are stored in roots. The method returns the number of real roots. See
Write a program that prompts the user to enter values for a, b, and c and displays the number of real roots and all real roots.
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