Algebra II Mod 2 Solving quad. equations and complex numbers

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Tags

CCSS.HSA-REI.B.4B

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.

Tags

CCSS.HSA-REI.B.4B

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Tags

CCSS.HSA-REI.B.4B

Solve by the Extraction of Roots method: x² = 16

• ± 4

• ± 8

• 4

• 8

Tags

CCSS.HSA-REI.B.4B

Solve by the Extraction of Roots method: -5x² = -50

• ± 5

• ± 10

• ± √10

• -10

Tags

CCSS.8.EE.A.2

Solve by the Extraction of Roots method: (x - 2) ² = 49

• 9 or -5

• ± 9

• ± 5

• ± 7

Tags

CCSS.HSA-REI.B.4B

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

CCSS.HSA-REI.B.4B

Solve the following quadratics equation by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2

Tags

CCSS.HSA-REI.B.4B

Solve the equation by completing the square and then finding the roots. 
x²+ 6x - 4 = 36

• x = -7, 7
• x = 4, -10
• x = -4 +- √7
• x = 10, -4

Tags

CCSS.HSA-REI.B.4B

• {49,-49}

• {8,-8}

• {7,-7}

• No Solution

Tags

CCSS.8.EE.A.2