Solving Quadratic Equations by Different Methods

Decide on the best method for solving this quadratic equation:

x² - 3x - 54 = 0

• Square Root Method

• Factor Method

  (cuban way)

• Complete the Square

• Quadratic Formula

Solve by factoring

• -4, 2

• -2, 4

• -16

• -4

• No real solutions

• x= -7, x=3

• x=7, x=3

• x=7, x=-3

• none of the above

Match the following.

• By graphing

• By factoring

• Solve using the Zero-Product Property

• Using square roots

Match the following methods to solve quadratic equations with the scenario it is best used in

• when b is an even number if a=1

• QUADRATIC FORMULA

• to check solutions

• SQUARE ROOTS

• when there is no "bx" term

• GRAPHING

• can be used in all cases

• COMPLETING THE SQUARE

• when the equation is factorable

• FACTORING

solve by completing the square

• x=13, x=1

• x= -3+ 2i

  x= -3 - 2i

• none of the above

In the quadratic formula, the expression
b²-4ac is called

• discrim

• determinant

• discriminant

• none of these

A function has a discriminant of 25.
______________
How many solutions does it have?

• 0

• 1

• 2

• 5

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these