Practice-It! logo

BJP3 Exercise 3.8: quadratic

Added by: Whitaker Brand on 2013/04/01
Keywords: parameters, Math

Write a method called quadratic that solves quadratic equations and prints their roots. Recall that a quadratic equation is a polynomial equation in terms of a variable x of the form a x2 + b x + c = 0. The formula for solving a quadratic equation is:

quadratic equation

Here are some example equations and their roots:

equation x2 - 7x + 12 x2 + 3x + 2
call quadratic(1, -7, 12); quadratic(1, 3, 2);
output
First root = 4.0
Second root = 3.0
First root = -1.0
Second root = -2.0

Your method should accept the coefficients a, b, and c as parameters and should print the roots of the equation. You may assume that the equation has two real roots, though mathematically this is not always the case.

Also, there should be two roots, one the result of the addition, the other, the result of the subtraction. Print the root resulting from the addition first.

You must log in before you can solve this problem.

user
Log In


indent Re-indent

If you do not understand how to solve a problem or why your solution code doesn't work, please contact your TA or instructor.

If something seems wrong with the Practice-It system itself (errors, slow performance, incorrect problem descriptions/tests, etc.), please contact us.

Is there a problem?
Contact a Practice-It administrator.