Quiz #3: Finding Zeros

How many total roots/zeros are there in the polynomial.   

• A
• B
• C
• D

Factor the quadratic expression

d² - 10d + 25

• (d + 5) (d - 5)

• (d - 15) (d + 10)

• (d + 5) (d - 20)

• (d - 5) (d - 5)

Which is a zero of the graph?

• 0
• -1
• 1.5
• -3

What are the zeros of x²+9x+14

• 2, 7
• -2, -7
• 2, -7
• -2, 7

If a quadratic function is represented as f(x) = (x - 7)(x + 8), find the zeros.

• x = - 7 and x = 8

• x = 7 and x = -8

Solve 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 all the real zeros of the function  f(x) = 2x³ - 19x² + 38x + 24

• x = 1/2, -6
• x = -1/2, 6
• x = 4, -1/2, 6
• x = -4, 1/2, -6

How could you determine if x-2 is a factor of 2x³-5x²+x-2?

• Use synthetic division and see if the quotient is even
• Ask the person sitting next to me
• Use synthetic division and see if the remainder is zero
• Flip a coin

What are the zeroes of this graph?

• x = -2, x = 1, x = 4

• x = -4, x = 0, x = 1, x = 2,

• x = -2, x = -1, x = 0, x = 4

• x = -4, x = -1, x = 2

What are the zeros of this graph?

• x = -3, x = 5

• x = -3, x = 0, x = 5

• x = -3, x = 2, x = 5

• x = 0