Review for the Periodical Exam

In the standard form, ax² + bx + c = 0, ax² is called quadratic term.

The formula in getting the product of the roots is  .

When  $b^2-4ac$   is greater than 0 and a perfect square, the roots are unequal                       rational numbers.

Quadratic formula is the easiest and most appropriate method for solving the roots of the equation  $x^2=25$  

What is the value of c in the equation 2x² + 3x = 9?

When b2– 4ac is greater than 0 and a perfect square, the roots are?

What are the roots of the equation
 $x^2+16\ =\ 0$  

What is the formula for the discriminant?

Which of the following expressions is a quadratic equation?

How many items did you get correctly?

What is the nature of the roots of the quadratic equation

What is the nature of the roots of the quadratic equation

What is the discriminant of x² + 7x + 10 ?

Find the values of x:

x² + 6x = 27

Solve for the discriminant of

x² – x + 4 = 0.

How many average round items did you get correctly?

What are the roots of the quadratic equation 3x²=75

What are the roots of the quadratic equation  $\left(x-3\right)^2\ =\ 36$  

Solve for the roots of x² + 10x + 8 = 0

How many difficult questions did you answer correctly?