Solving Quadratics Easy

If there are no real solutions, the discriminant is

• zero

• a postive number

• a negative number

• a perfect square

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CCSS.HSA-REI.B.4B

• Factoring Method

• Completing the Square Method

• Quadratic Formula

• Square Root Method

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CCSS.HSA-REI.B.4B

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

• zero

• a postive number

• a negative number

• a perfect square

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CCSS.HSA-REI.B.4B

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

• then your answer will be negative

• the quadratic has no solutions

• the quadratic has one solution

• the quadratic is crazy

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CCSS.HSA-REI.B.4B

How many solutions can a quadratic have?

• one

• two

• none

• either of the above

• none of the above

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

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CCSS.HSA-REI.B.4B

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

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CCSS.HSA-REI.B.4B

Solve by using the quadratic formula.

7x² - 26x - 8 = 0

• x = -1 and x = -7/8

• x = 4 and x = -2/7

• x = -4 and x = 2/7

• x = 4 and x = -7/2

Tags

CCSS.HSA-REI.B.4B

Solve for x. Round to the nearest hundredth if necessary.

2x² = -x + 3

• x = -1 and x = 1.5

• x = 1.5 and x = -1

• x = 1 and x = 1.5

• x = -1.5 and x = 1

Tags

CCSS.HSA-REI.B.4B