Reviewing Quadratic Formula & Factoring

When factoring, the first step is to multiply which two numbers?

• b*c

• a*c

• a*b

• a*b*c

After you multiply a*c, what do you do with that number?

• list the factors

• multiply with b

• take out any common factors

• tap out

After you multiply a and c, you look for factors that combine to get what?

• a

• b

• c

• d

When using the Quadratic formula you have to identify a, b, and c. Which answer does this correctly?

• a = 6, b = 1, c = 1

• a = -6, b = -1, c = 1

• a = -1, b = 6, c = 1

• a = 1, b = -1, c = -6

Tags

CCSS.HSA-REI.B.4B

What has to be done first here to begin to solve?

• make the equation = 0

• combine 11x and 28

• list factors of -28

• list factors of 11

Tags

CCSS.HSA-REI.B.4B

Which part of the quadratic formula should you start?

• $-b$

• $\frac{\sqrt{b^2-4ac}}{2a}$

• $b^2-4ac$

• 2a

Tags

CCSS.HSA-REI.B.4B

 $b^2-4ac$  , What does it mean if this part of the Quadratic formula is negative?

• then your answer will be negative

• the quadratic has no solutions

• the quadratic has one solution

• the quadratic is crazy

Tags

CCSS.HSA-REI.B.4B

What is $\sqrt{25}$  ?

•  $\sqrt{25}$   

• 5

• 25

• -5

Tags

CCSS.8.EE.A.2

What is $\sqrt{-25}$  ?

• 5

• -5

• -25

• you can't take the square root of a negative number

Why is there a + with a - in front of the square root sign?

• It's a new operation

• you just pick one to use

• you use both, once with +, once with -

• eh, whatever

Tags

CCSS.HSA-REI.B.4B