Solving Quadratics

Solve by taking square roots:
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Solve      3x² - 192 = 0

• -32 or 32
• No Solution
• -8 or 8
• -64 or 64

Find the axis of symmetry for the function:
f(x) = 2x² - 4x - 6

• x = 1
• x = -1
• x = 4
• x = -4

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3
• 2, 3
• 2, -3
• -2, -3

Which binomials are a difference of squares?
I. 6a²-25
II. 4x²+16
III. b²-9
IV. 49y²-64

• I only
• III only
• III and IV
• II, III, and IV

Solve by completing the square:
x² + 6x = 55

• x = -14, 2
• x = 14, -2
• x = -5, 11
• x = 5, -11

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: 2r² - 6r = -4

• r = -2, r = 1
• r = -2, r = -1
• r = 2, r = 1
• r = 2, r = -1

What is the vertex of the graph?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

Does this graph in the back have maximum or minimum value?

• maximum
• minimum
• neither
• both

What is the discriminant for:
y = x²+ 9x + 10

• -121
• 7.14
• 41
• 121