Graphing Radical Functions — Unit test Answers

Using the quadratic formula to solve 11x2 – 4x = 1, what are the values of x?

Dimitri is solving the equation x2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?

Tim throws a stick straight up in the air from the ground. The function h = –16t2 + 48t models the height, h, in feet, of the stick above the ground after t seconds. Which inequality can be used to find the interval of time in which the stick reaches a height of more than 8 feet?

Adam is using the equation (x)(x + 2) = 255 to find two consecutive odd integers with a product of 255. When Adam solves the problem using the zero product property, what do those solutions represent?

If the discriminant of a quadratic equation is 4, which statement describes the roots?

Use the zero product property to find the solutions to the equation x2 – 9 = 16.

What is the sum of 12 – 5i and –3 + 4i?

Which graph represents the solution set for the quadratic inequality x2 + 2x + 1 > 0?

For what values of m does the graph of y = mx2 – 5x – 2 have no x-intercepts?

Which pair of complex numbers has a real-number product?