Solving Quadratics All Ways

If the discriminant equals 0, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution

Tags

CCSS.HSA-REI.B.4B

If the discriminant is positive, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution

Tags

CCSS.HSA-REI.B.4B

What is the discriminant?

• b²-4ac

• b²/2a

• 4ac

• b²±4ac

Tags

CCSS.HSA-REI.B.4B

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

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.8.EE.A.2

If the graph of a quadratic does not intercept the x axis at any point, then it has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution

Tags

CCSS.HSF-IF.C.7A

When using a graph to solve a quadratic, how do you know if there are any solutions?

• The graph is completely above the x-axis.

• The graph intersects the x-axis once (one point on it).

• The graph intersects the x-axis twice (two points on it).

• Both b and c.

When solving a quadratic equation, what is the MAXIMUM number of solutions?

• There is no way to tell.

• 0

• 1

• 2

Tags

CCSS.HSA-REI.B.4B

• x = {2, -5}

• x = (2, -5)

• x = {-2, 5}

• x = (-2, 5)

Tags

CCSS.HSA-REI.B.4B

• 9

• -18

• -81

• 81

Tags

CCSS.HSA-REI.B.4B