quadpractice

Choose all that are correct when finding zeros by factoring.

v² - 6v + 9

• x=3

  (3,0)

• (v-3)²

• (v+3)(v-3)

• parabola has one x intercept which means it touches the x intercept at (3,0)

• x= -3

  (-3,0)

Find the zeros by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6

• x = 3 and x = -6

• x = -9 and x = 2

• x = 9 and x = -2

Find the zero(s) of the function.

• x = {-4, 4}
• x = -4
• x = 4
• x = 0

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solve using square roots.

• A

• B

• C

• D

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

CCSS.8.EE.A.2

Solve using square roots.
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.8.EE.A.2

Solve using square roots.

x² +12 = 5

• x = ± 49

• No Real Solutions because you cannot take the square root of a negative number.

• x = ± √7

• Does not have any x intercepts meaning it does not touch the x axis but is graphed above the x axis and and has a min as it's vertex.

• Does not have any x intercepts meaning it does not touch the x axis but is graphed below the x axis and has a max as it's vertex.

Find the roots by using the square root method. Choose all that are true with this problem.

3 + 9r² = 12

• r = 1

• (1,0) and (-1,0) is where the parabola crosses the x axis when graphed.

• The first step is to isolate the term 9r² by subtracting both sides of the equation by 3.

• r = 1, r = -1

Find the x intercepts by completing the Square and solve the equation.

a² - 2a - 35 = 0

• 1 ± √ 6

• -7, 7

• -5, 7

• 35, 37

Complete the Square and solve the equation.
r² - 4r = 30

• 2 ± √ 34
• ± √ 34
•  34
• ± 2

Tags

CCSS.HSA-REI.B.4B