Unit 1B TEST 9.24

The function f(x) = −(x + 5)(x + 1) is shown. https://media.edgenuity.com/evresources/3109/3109-09/3109-09-03/3109-09-03-assessment/3109-09-03-31.png

all real numbers less than or equal to 4

Which point is an x-intercept of the quadratic function f(x) = (x - 3)(x + 7)?

(3, 0)

What is the value of (-3 + 3i) - (-2 + 9i)?

-1-6i

Divide by rationalizing the denominator. 6 + 8i / 9 + 3i

13 + 9i / 15

Which of the following is equivalent to 18-√-25?

18-5i

Which expression is equivalent to (6 + 2i)(5 + 3i) ?

24 + 28i

What is the absolute value of the complex number -3+4i

5

Mia is solving the equation x2 - 6x = 1. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?

9

What are the solution(s) of the quadratic equation x^2 = -98?

x = +7i√2

Solve for X in the equation using the quadratic formula x^2 + 2x + 11 = 0

x = -1 + i√10

What are the solutions of the quadratic equation (x - 9)^2 = 81 ?

x = 0 and x = 18

Solve for x in the equation using the quadratic formula x^2 - 2x - 7 = 0

x = 1 + 2√2