Solving Complex Quadratics

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.8.EE.A.2

Simplify

• 5i

• -5i

• ±5i

• ±

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

• Two real solutions that are different

• Two imaginary solutions that are different

• A real double solution

• An imaginary double solution

Tags

CCSS.HSA-REI.B.4B

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

• Two real solutions that are different

• Two imaginary solutions that are different

• A real double solution

• An imaginary double solution

Tags

CCSS.HSA-REI.B.4B

What is the discriminant of the quadratic formula?

• b²-4a

• b²-4ac

• b-4ac

• b²-ac

Tags

CCSS.HSA-REI.B.4B

What are the zeros of the function f(x) = x² + 64?

• -8 and 8

• -8i and 8i

• (-√8) i and (√8) i

• -√8  and √8

How does the quadratic equation show that there should be two complex solutions?

• b²

• ±

• b² - 4ac

• 2a

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What would be the next step when solving by completing the square?

• Add 49 to both sides.

• add 14 to both sides.

• subtract 76 from both sides.

• Add 7 to both sides.

Tags

CCSS.HSA-REI.B.4B

What would be the next step when solving by completing the square?

• Add 25 to both sides.

• add 100 to both sides.

• subtract 96 from both sides.

• Add 5 to both sides.

Tags

CCSS.HSA-REI.B.4B