Solving Quadratics with the Quadratic Formula

Front

What is the discriminant of the quadratic formula?

Back

b² - 4ac

Front

Solve Using the Quadratic Formula: 2x² + 7x - 15 = 0

Back

x = -5 or x = 1.5

Front

What is this formula?

Back

This is the quadratic formula.

Front

What should you do first in solving this equation: x² + 6x - 13 = 3?

Back

Make it equal 0 by subtracting 3 on each side.

Front

If b² - 4ac is 0, the quadratic equation has:

Back

One real solution.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a)

Front

What does it mean if the discriminant is positive?

Back

The quadratic equation has two distinct real solutions.

Front

What does it mean if the discriminant is negative?

Back

The quadratic equation has two complex (imaginary) solutions.

Front

How do you identify a, b, and c in the quadratic equation ax² + bx + c = 0?

Back

a is the coefficient of x², b is the coefficient of x, and c is the constant term.

Front

What is the first step in using the quadratic formula?

Back

Identify the coefficients a, b, and c from the quadratic equation.