(Algebra: solve quadratic equations) The two roots of a quadratic equation ax2 + bx + x =...

(Algebra: solve quadratic equations) The two roots of a quadratic equation ax2 + bx + x = 0 can be obtained using the following formula:

Write a function with the following header

void solveQuadraticEquation( double a, double b, double c, double& discriminant, double & r1 ,double & r2)

b2 − 4ac is called the discriminant of the quadratic equation. If the discriminant is less than 0 , the equation has no roots. In this case, ignore the value in r1 and r2.

Write a test program that prompts the user to enter values for a , b , and c and dis;plays the result based on the discriminant. If the discriminant is greater than or equal to 0, display the two roots. If the discriminant is equal to 0 , display the one root. Otherwise, display "the equation has no roots". See Programming Exercise for sample runs.