This problem requires writing a program to call the following function. double root( double a, double b, double c); // Precondition: a != 0 and a, b, c are coefficients of // a quadratic equation a*x*x + b*x + c = 0 // Postcondition: return value, x, satisfies the // equation a*x*x + b*x + c = 0

Given three double types of data a, b, c and an integers i, which is either +1 or -1 to choose which root.

the roots

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