Mid-Unit 7 Review (Quadratic Equations)

Select all values of x that are solutions to the equation (x - 4)(3x + 1) = 0.

• -4

• 4

• 0

• $\frac{1}{3}$

• $-\frac{1}{3}$

Find f(0).

Find the values of x that make f(x) = 0. (Type your answers as numbers with a comma in between them. Ex: 2,.8)

Select all equations that have two solutions.

• $x^2=24$

• $x^2=-24$

• $x^2=0$

• -2x - 7 = 12

• (x - 3)(x + 3) = 0

Here is a graph of the equation y = (x - 4)². Which statement is true about the solutions to the equation.

• The equation has no solution.

• The equation has one solution: 4

• The equation has two solutions: 4 and -4

• The equation has infinitely many solutions.

If the equation (x + 7)x = 0 is true, which statement is also true according to the zero product property?

• only x = 0

• either x = 0 or x + 7 = 0

• either x² = 0 or 7x = 0

• only x + 7 = 0

Select all the solutions to the equation 5x² - 2 = 123

• 5

• $\sqrt{5}$
  

• $\sqrt{25}$

• $\sqrt{-25}$

• $-\sqrt{25}$

How many solutions does 2x² - 2 = 0 have?

• 0

• 1

• 2

How many solutions does (x + 3)² = 0 have?

• 0

• 1

• 2

How many solutions does x² + 100 = 0 have?

• 0

• 1

• 2