Algebra - Lesson Solving Quadratics with Quadratic Formula

Algebra - Lesson Solving Quadratics with Quadratic Formula

This is the general form of a quadratic.

Remember, to solve this type of equation y must be equal to 0.

Multiple Choice

Identify the a, b and c values for this equation:

3x² - 8x + 15 = 0

• a = 3, b = 8, c = 0

• a = 3, b = -8, c = 15

• a = 3, b = 8, c = 15

Do questions 1 through 4 on the classwork and then come back here.

Multiple Choice

Solve by quadratic formula:

x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5