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

To use this website, you must agree to our Privacy Policy , including cookie policy. Check reasonableness Use a calculator: Entering —b for negative values of b. Identify a, b, and c. Use the discriminant to explain your answer.

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. My presentations Profile Feedback Log out. Many quadratic equations can be solved using several different methods. Solving Using Different Methods. Sometimes one method is better for solving certain types of equations. L pg x3, skip 21, 54, add 23, 53 63 use another method. Forgetting to take the square root of the discriminate.

There is one real solution. Students will be able to solve a quadratic equation by finding the square root.

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

The object will reach its maximum height of 40 feet once. Method 2 Probpem by factoring. Substitute 1 for a, —9 for b, and 20 for c.

We think you have liked this presentation. Take the square root of both sides.

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The area of the pool is square feet. Write the related quadratic function and graph it.

To use this website, you must agree to our Privacy Policyincluding cookie policy. Check reasonableness Use a calculator: My presentations Profile Feedback Log out. The following table gives some advantages and disadvantages of the different methods. Share buttons are a little bit lower. Auth with social network: L pg x3, skip 21, 54, add 23, 53 63 use another method.

Method 1 Solve by graphing. An object is shot up from 4 feet off the ground with an initial velocity of 48 feet per second.

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. What is the length of the longer base?

Forgetting that your calculator knows orders of operation and does exactly what you tell it to do. Use the Quadratic Formula. Write as two equations. The discriminant is zero. Will it reach a height of 40 feet?

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Identify a, b, and c.

Method 4 Solve using the Quadratic Formula. The Quadratic Formula is the only method that can be used to solve any quadratic equation. A community swimming pool is in the shape of a trapezoid. Use the discriminant to explain your ahd. Entering —b for negative values of b. About project SlidePlayer Terms of Service. The ringer will not reach a height of 20 feet. Published by Branden Brown Modified over 4 years ago.

Registration Forgot your password? There are no real solutions b2 — 4ac is positive.