Study Guide Quadratic Formula

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

Tags

CCSS.HSA-REI.B.4B

Solve - you choose the best method this time

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

What are the next steps to finish solving this quadratic equation by "completing the square"?

• Subtract 3 from both sides

• Take the square root of each side, then subtract 3 and finish simplifying both remaining roots if possible.

• Subtract 7 to move to the left side, combine it wit the 3, then take the square root.

• The problem is already solved.

Tags

CCSS.HSA-REI.B.4B

Which quadratic formula is set up correctly?

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Tags

CCSS.HSA-REI.B.4B

Which quadratic formula is set up correctly?

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• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

What is done to the "b" value to correctly complete the square?

• square it

• divide it by 2 and square the result

• divide it by 2 and take the square root of the result

• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

When do you use the plus or minus symbol?
±

• After taking the square root of both sides

• After adding the square to both sides

• After taking half of b

• After setting the equation equal to zero

Tags

CCSS.HSA-REI.B.4B

Which choice correctly describes the work shown for Alonso and Aida?

• Neither Alonso nor Aida are correct because they both took the equation out of standard form by adding 20 to each side.

• Aida is correct because she only added 16 to one side but Alonso added 16 to both sides.

• Alonso is correct because Aida did not add 16 to each side; she added it only to the left side.

• They are both correct because there are a lot of ways to solve the equation and there are many different real solutions that work.

Tags

CCSS.HSA-REI.B.4B

Identify the values of A, B, and C

• A=2, B=10, C=-18

• A=5, B=1, C=-18

• A=8, B=-8, C=-18

• A=2, B=9, C=-18

What is the discriminant of this graph?

• Positive

• Zero

• Negative

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A