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

Will it reach a height of 40 feet? Substitute 1 for a, —9 for b, and 20 for c. Forgetting that your calculator knows orders of operation and does exactly what you tell it to do. There is one real solution. To make this website work, we log user data and share it with processors. Share buttons are a little bit lower. Check reasonableness Use a calculator:

Share buttons are a little bit lower. Method 1 Solve by graphing. Method 4 Solve using the Quadratic Formula. Write as two equations. Students will be able to solve a quadratic equation by finding the square root. Entering —b for negative values of b.

There are two real solutions b2 — 4ac is zero.

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

Method 2 Solve by factoring. To use this website, you must agree to our Privacy Policyincluding cookie policy. Discrimiant to take the square root of the discriminate. Identify a, b, and c. About project SlidePlayer Terms of Service. My presentations Profile Feedback Log out.

To make this website work, we log user data and share it with processors. Method 3 Solve by completing the square. There is one real solution. Check reasonableness Use a calculator: The discriminant is negative, so there are no real solutions.

You can determine the number of solutions of a quadratic equation by evaluating its discriminant. Use the discriminant to explain your answer.

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Using the Discriminant Find the number of solutions of each equation using the discriminant. Will it reach a height of 40 feet?

Write as two equations. Method 1 Solve by graphing.

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

Recall that quadratic equations can have two, one, or no real solutions. The Quadratic Formula is the only method that can be used to solve any quadratic equation. Registration Forgot your password? Substitute 6 for a, 5 for b, and —4 for c. The following table gives some advantages and disadvantages of the different methods.

Some cannot be solved by any of these methods, but you can always use the Quadratic Formula to solve any quadratic equation. An object is shot up from 4 feet off the ground with an initial velocity of 48 feet per second. Feedback Privacy Policy Feedback. The discriminant is zero. We think you have liked this presentation.

There are no real solutions b2 — 4ac is positive. Substitute 1 for a, —1 for b, and —20 for c. Solving Using Different Methods.

The object will reach its maximum height of 40 feet once. The area of the pool is square feet. Sometimes one method is better for solving certain types of equations.