Determine the Best Method of Solving Quadratic Equations

Decide on the best method:

3a² + 13a = -4

• Isolation Method

• Factor Method

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

Decide on the best method:

x² + 2x = -9

• Isolation Method

• Factor Method

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

• Isolation Method

• Factoring

• Completing the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

• Isolation Method

• Factoring

• Completing the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

• Isolation Method

• Factoring

• Completing the Square

• Quadratic Formula

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

What is this?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

Tags

CCSS.HSA-REI.B.4B

Which method is best to solve:

8x² - 5x = 0

• Isolation Method

• Greatest Common Factor (GCF)

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

Which method is BEST to solve:

8x² - 6 = 0

• Isolation Method

• Greatest Common Factor (GCF)

• Complete the Square

• Quadratic Formula

Tags

CCSS.HSA-REI.B.4B

How do I find the c term to make a perfect square when completing the square?

• Move c to the other side

• b value divided by 2 to the second power

• Make 2 equations, one = + and one = -

• Square root both sides

Tags

CCSS.HSA-REI.B.4B