Math 1201 Review QUIZ

The solutions of x2 -8x + 17 = 0 are?

a. 4 + i and 4 - i

What are the least, and most, number of distinct real roots of a 6th degree polynomial?

a. The least is 0, the most is 6

As x goes to infinity, the graph of f(x) = 5x4 - 173x3 -16x2 -7x -15 goes to (points in) what direction?

a. ∞

Solve the system: 3x - 2y = 10, 5x + 3y = 23

b. (4, 1)

Solve the system: x + y + z = 3, 2x - y = 3

b. (x, 2x - 3, 3 - 3x + 3)

If A = 3 and B = 4 + i, A/B = ?

b. 12/17 - (3/17)i

If f(x) = x2, what is f(x + h) - f(x)?

b. 2xh + h2

The quotient of 4x3 + 10x2 − 6x − 20 by x + 2 is:

b. 4x2 + 2x -10

Solve the system: 2x - y = 4, x + y = 5

c. (3, 2)

Solve for x: e2x + 1 = 10. Choose the closest answer.

c. 0.6

What is i73?

c. i

If f(x) = 3x - 5, what is the inverse of f?

c. x/3 + 5/3

The x-intercept of y = 4x - 8 is?

d. (2, 0)

The roots of (x + 1)2 + 1 = 0 are:

d. -1+i, -1-i

What is i103?

d. -i

The graph of f(x) = x3 -6x2 + 4x +1 hits the x-axis how many times?

d. 3

According the rational root theorem, how many possible rational roots are there to 2x4 + 14x3 - 6x + 7 = 0?

d. 8

What is the solution of 2x - y = 5, -8x + 4y = 2?

d. There is no solution

Solve the system: y2 = x - 7, y = x - 7

e. None of these

What are the possible rational roots of f(x) = x4 -7x + 8?

e. {+-1, +-2, +-4, +-8}