Assume the following variables have been declared as shown and given values elsewhere:
double a, b, c;
The discriminant of a quadratic equation is defined to be: Which of the following statements will assign the correct value to discriminant?
A)double discriminant = Math.sqrt(b * b - 4 * a * c);
B)double discriminant = Math.sqrt(b * b) - 4 * a * c;
C)double discriminant = Math.sqrt(b * b) - Math.sqrt(4 * a * c);
D)double discriminant = Math.sqrt(b2 - 4ac)

Question

Assume the following variables have been declared as shown and given values elsewhere:
double a, b, c;
The discriminant of a quadratic equation is defined to be:  Which of the following statements will assign the correct value to discriminant? 
A)double discriminant = Math.sqrt(b * b - 4 * a * c); 
B)double discriminant = Math.sqrt(b * b) - 4 * a * c; 
C)double discriminant = Math.sqrt(b * b) - Math.sqrt(4 * a * c); 
D)double discriminant = Math.sqrt(b2 - 4ac)

Quizplus · Accepted Answer

The formula for discriminant is b^2 - 4ac, which is the same as the expression used in option A, but with the square root operation added. Therefore, option A is the correct choice as it computes the value of the discriminant using the correct formula and also applies the square root operation to it.

Assume the Following Variables Have Been Declared as Shown and Given