Algebra 2 Ch. 5 Review

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1 point

Which equation has the solutions -3 +/- 5i (-3 plus or minus 5i)?

x^2 + 6x = -14

x^2 + 3x = 2

x^2 + 6x = -34

x^2 + 3x - 4

1 point

For y = 3x^2 - 7x + 5, what is the value of the x-coordinate of the vertex?
(Write as an improper fraction)

1 point

How many REAL solutions are there for 2x^2 - 3x + 5 = 0

None of these

1 point

Solve using your graphing calculator: 2x^2 + 3x - 4 = 0

-5.6, -1.4

None of these are correct

-0.6, 0.3

-2.4, 0.9

1 point

What are the solutions to: -4x^2 - 72 = 0?

+/- 2i√3

+/- 2√3

+/- 3i√2

+/- 3√2

1 point

The vertex of y = -x^2 - 16x - 62 lies in which quadrant on the Coordinate Plane?

1 point

Solve 6x^2 + 9x - 15 = 0

1, -5/2

-1, -5

3, 5/2

1, -15

1 point

Factor: 4x^2 + 15x - 4

(4x + 1)(x - 4)

(2x - 4)(2x + 1)

(4x - 1)(x +4)

(2x +2)(2x -2)

1 point

What is the y-intercept of y = (x + 1)^2 - 2?

(0, -2)

(0, 1)

(0, -3)

(0, -1)

10.

1 point

What is the vertex of y = -2x^2 - 4x - 5?

(-2, -3)

(1, -11)

(-1, -3)

(1, -3)

11.

1 point

Simplify: (8 - 5i)(8 - 5i)

39 + 80i

69 + 80i

39 - 80i

69 - 80i

12.

1 point

When written in vertex form, what is value of k?
y = -3x^2 - 18x - 23

-4

13.

1 point

For which equation is -3 NOT a solution?

x^2 - 21 = 4x

x^2 - 2x - 15 = 0

2x^2 + 12x = -18

9 + x^2 = 0

14.

1 point

What is the number √-225 + 36 when written in form a + bi?

15.

1 point

Which of the following is NOT a quadratic function?

(x - 1)(x - 2)

-x^2 + x(x - 3)

x^2 + 2x - 3

2x - x^2

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