# LESSON 9-9 PROBLEM SOLVING THE QUADRATIC FORMULA AND THE DISCRIMINANT ANSWERS

The ringer on a carnival strength test is 2 feet off the ground and is shot upward with an initial velocity of 30 feet per second. The discriminant is negative, so there are no real solutions. Substitute 1 for a, —9 for b, and 20 for c. What is the length of the longer base? Use the discriminant to explain your answer. Determine the number of solutions of a quadratic equation by using the discriminant. An object is shot up from 4 feet off the ground with an initial velocity of 48 feet per second. Using the Discriminant Find the number of solutions of each equation using the discriminant. There is one real solution. Method 3 Solve by completing the square. Sometimes one method is better for solving certain types of equations. Forgetting that your calculator knows orders of operation and does exactly what you tell it to do.

Substitute 1 for a, —1 for b, and —20 for c. About project SlidePlayer Terms of Service. The object will reach its maximum height of 40 feet once. Check reasonableness Use a calculator: The discriminant is negative, so there are no real solutions.

## The Quadratic Formula 9-9 and the Discriminant Warm Up

Write the related quadratic function and graph it. An object is shot up from 4 feet off the ground with an initial velocity of 48 feet per second. Write as two equations. Forgetting that your calculator knows orders of operation and does exactly what you tell sklving to do.

L pg x3, skip 21, 54, add 23, 53 63 use another method. There is one real solution. The discriminant is zero. Method 3 Solve by completing the square. The ringer will not reach a height of 20 feet. Entering —b for negative values of b. Forgetting to take the square root of the discriminate. The Quadratic Formula is the only method that can be used to solve any quadratic equation.

Using the Discriminant Find the number of solutions of each equation using the discriminant. Feedback Privacy Policy Feedback. Method 4 Solve using the Quadratic Formula. Identify a, b, and c. Quadratoc 6 for a, 5 for b, and —4 for c. Some cannot be solved by any of these methods, but you can always use the Quadratic Formula to solve any quadratic equation.

Students will be able to solve a quadratic equation by finding the square root. If you wish to download it, please recommend it to your friends in any social system. The ringer on a solviing strength test is 2 feet off the ground and is shot upward with an initial velocity of 30 feet per second. The following table gives some advantages and disadvantages of the different methods. Registration Forgot your password?

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To use this website, you must agree to our Privacy Policyincluding cookie policy. Substitute 1 for a, —9 for b, and 20 for c. 