Solving Quadratics with the Quadratic Formula

Front

What is the discriminant of the quadratic formula?

Back

b² - 4ac

Tags

CCSS.HSA-REI.B.4B

Front

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

Back

x = -5 or x = 1.5

Tags

CCSS.HSA-REI.B.4B

Front

What is this formula?

Back

This is the quadratic formula.

Tags

CCSS.HSA-REI.B.4B

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.

Tags

CCSS.HSA-REI.B.4B

Front

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

Back

One real solution.

Tags

CCSS.HSA-REI.B.4B

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a)

Tags

CCSS.HSA-REI.B.4B

Front

What does it mean if the discriminant is positive?

Back

The quadratic equation has two distinct real solutions.

Tags

CCSS.HSA-REI.B.4B

Front

What does it mean if the discriminant is negative?

Back

The quadratic equation has two complex (imaginary) solutions.

Tags

CCSS.HSA-REI.B.4B

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.

Tags

CCSS.HSA-REI.B.4B