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

Method 3 Solve by completing the square. There is one real solution. There are two real solutions b2 — 4ac is zero. Substitute 1 for a, —9 for b, and 20 for c. Substitute 6 for a, 5 for b, and —4 for c. Using the Discriminant Find the number of solutions of each equation using the discriminant.

The following table gives some advantages and disadvantages of the different methods. The discriminant is negative, so there are no real solutions. L pg x3, skip 21, 54, add 23, 53 63 use another method. Registration Forgot your password? Sometimes one method is better for solving certain types of equations. Determine the number of solutions of a quadratic equation by using the discriminant.

The ringer will not reach a height of 20 feet. Forgetting to take the square root of the discriminate. The area of the pool is square feet.

Will it reach a height of 20 feet? The ringer on a carnival strength test is 2 formla off the ground and is shot upward with an initial velocity of 30 feet per second. L pg x3, skip 21, 54, add 23, 53 63 use another method. Many quadratic equations can be solved using several different methods.

HOMEWORK ANYONG LUPA

Determine the number of solutions of a quadratic equation by using the discriminant. Registration Forgot your password? Method 3 Solve by completing the square.

Will it reach a height of 40 feet? Identify a, b, and c. Use the discriminant to explain your answer. There is one real solution.

The height of the trapezoid is twice as long as asnwers shorter base and the longer base is twice as long as the height. An object is shot up from 4 feet off the ground with an initial velocity of 48 feet per second.

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

Solving Using Different Methods. Feedback Privacy Policy Feedback. A community swimming pool is in the shape of a trapezoid. Check reasonableness Use a quadratci The discriminant is negative, so there are no real solutions.

Method 4 Solve using the Quadratic Formula. Substitute 1 for a, —1 for b, and —20 for c.

quasratic The object will reach its maximum height of 40 feet once. Using quadrstic Discriminant Find the number of solutions of each equation using the discriminant. Some cannot be solved by any of these methods, but you can always use the Quadratic Formula to solve any quadratic equation.

BART HOMPES THESIS

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.