Solving Quadratics

What are the solutions of this graph?

• -2 and 3
• -1/2 and -6
• -2 and -6
• 3 and -6

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

What are the factors AND solutions of x² + 2x – 3 = 0

• (x - 2)(x + 1); x=2, x=-1
• (x + 1)(x - 3); x=-1, x=3
• (x + 2)(x - 1); x=-2, x=1
• (x - 1)(x + 3); x=1, x=-3

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Solve:

k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no solution

Solve:

5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve:

2(x - 4)² = 200

• ±10

• -14, 6

• -6, 14

• 100

Solve:

(x- 9)(x + 3) = 0

• x = 3 or x = 9

• x = 3 or x = -9

• x = -3 or x = 9

• x = -3 or x = -9

Solve:

3x(2x - 4) = 0

• x = -1/3 or x = -2

• x = 0 or x = 2

• x = 0 or x = -2

• x = -1/3 or x = 2

Solve the equation by factoring.
x² + 13x + 40 = 0

• -8, 5
• -40, -1
• 5, 8
• -8, -5

Tags

CCSS.HSA-REI.B.4B

Solve the equation by factoring. (Don't forget to set equal to zero!!)

x² - 36 = 35x

• -1, 36

• 1, -36

• -6, 6

• -6

Solve by Factoring. (Don't forget to set equal to zero!!)

2x² - 3x = 2

• x = 1, x = -1

• x = -1/2, x = 2

• x = 1/2, x = 2

• x = 1/2, x = 1