ch 2 quiz 2

(3 + 2i) + (4 - 5i)

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

3i - (4 + 7i)

• -4 + 10i

• 4 - 10i

• 21 - 12i

• -4 - 4i

(3 + 8i)(-2 - i)

• 2-19i

• 23-i

• 34+5i

• 23-i

The degree of the polynomial determines the max number of roots.

• True

• False

Is -3 a POSSIBLE zero of f(x)=3x^3 + 2x^2 -5x +2 ?

• no, 3 is not a factor of 3

• yes

• no, 2 is not a factor of 3

• no, 3 is not a factor of 2

List the ACTUAL rational zeros of f(x) = x^3 + 7x^2 - 2x - 14

• ±1,±2,±7,±14

• -7

• 7

• 2, 7

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

• Since it x has a number with it, it cannot have a zero

Where is the horizontal asymptote for the function f(x) = (4 - x)/(x - 2)?

• y = 0

• no horizontal asymptote

• y = 1

• y = -1

 

(2,2) is a solution to the inequality 2x - 6y > x² + 4x - 8

• True

• False

Solve the inequality in interval notation

(5 + 7x)/(1 + 2x) ≥ 4

• (-inf, -1/2)U(1, inf)

• (-1/2, 1]

• (-inf, -1/2)U[1, inf)

• [-1/2, 1)