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

Using the Discriminant Find the number of solutions of each equation using the discriminant. Round to the nearest foot. L pg x3, skip 21, 54, add 23, 53 63 use another method. What is the length of the longer base? Forgetting to take the square root of the discriminate.

Method 3 Solve by completing the square. Feedback Privacy Policy Feedback. Use the discriminant to explain your answer. Substitute 6 for a, 5 for b, and —4 for c. Method 4 Solve using the Quadratic Formula. Check reasonableness Use a calculator:

Method 4 Solve using the Quadratic Formula.

Write as two equations. There are two real solutions b2 — 4ac is zero. Method 1 Solve by graphing.

The following table gives some advantages and disadvantages of the different methods. Published by Branden Brown Modified over 4 years ago. Forgetting to take the square root of the discriminate.

Method 2 Solve by factoring.

L pg x3, skip 21, 54, add 23, 53 63 use another method. The height of the trapezoid is twice as long as the shorter base and the longer base is twice as long as the height.

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Entering —b for negative values of b. Students will be able to solve a quadratic equation by finding the square root.

The Quadratic Formula is the only method that can be used to solve any quadratic equation. Use the discriminant to explain your answer. Auth with social network: Use the Quadratic Formula. What is the length of the longer base? To use this website, you must agree to our Privacy Policyincluding cookie policy. Write the related quadratic function and graph it. Determine the number of solutions of a quadratic equation by using the discriminant. Sometimes one method is better for solving certain types of equations.

We think you have liked this presentation. You can determine the number of solutions of a quadratic equation by evaluating its discriminant.

# The Quadratic Formula and the Discriminant Warm Up – ppt video online download

Using the Discriminant Find the number of solutions of each equation using the discriminant. Check reasonableness Use a calculator: Recall that quadratic equations can have two, one, or no real solutions. Round to the nearest foot. Solving Using Different Methods.

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

Some cannot be solved by any of these methods, but you can always use the Quadratic Formula to solve any quadratic equation. Will it reach a height of 40 feet? Method 3 Solve by completing the square. The ringer will not reach a height of 20 feet. Substitute 1 for a, —9 for b, and 20 for c.

My presentations Profile Feedback Log out. 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.