Zeros of Polynomials

List all the possible rational roots of
 f(x)=2x²-3x+4

• +/- 1, 2, 1/4, 1/2
• +/- 1, 2, 4, 1/2, 
• +/- 1, 2, 4

What is the factored form of a function if it has zeros of 2, 3 and -1?

• (x-2)(x-3)(x+1)
• (x-1)(x-2)(x-3)
• (x-1)(x+2)(x+3)

Tags

CCSS.HSA.APR.B.3

If 2i is a zero, then

• 2i repeats twice
• -2i is a zero too
• 1-2i is a zero too
• 0+2i is a zero too

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.APR.B.2

CCSS.HSN.CN.C.8

Find all rational zeros:
f(x) = x³-5x²-2x+24

• -2,1,0
• -2,-3,-4
• 4,3,-2
• 0,0,0

True or False:  If (7x + 4) is a factor of some polynomial function f, then 4/7  is a zero of the function. 

• True
• False

The degree of the polynomial determines the number of roots.

• True
• False

What is another way to say "where a function crosses the x-axis"?

• x-intercept
• zero
• root
• all of these.

Find all zeros for the polynomial function P(x) = x³ -3x²-5x+15

• 3, √5 
• 3, √5, -√5
• -3, √5, -√5
• -3, 5i, -5i

One zero of 2x³-13x²+36 is 2.
What is another zero?

• 3/2
• 6
• 2
• -6

One zero of 3x³-4x²-28x-16 is 4.
Name ALL of the zeros

• 4, -2, 2/3
• 4, -2, -2/3
• 4, 2, -3/2
• 4, -2, -3/2