Number of Solutions Quadratic

Use the quadratic formula to determine the solutions.

2x² - 9x - 35 = 0

• x = 7/2, x = -6

• x = -5/2, x =5

• x = -3/7, x =6

• x = -5/2, x = 7

What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

If the discriminant is negative, you will have....

• two real solutions

• two irrational solutions

• no solution

• one solution

Use the discriminant to determine the number of solutions the following quadratic equation has.

6x² − 2x − 3 = 0

• 76 Two Solutions

• 29 Two Solutions

• 68 Two Solutions

• none of these

Use the discriminant to determine the number of solutions the following quadratic equation has. -2x² − x − 1 = 0

• 76 Two Solutions

• -7 No Solutions

• 9 Two Solutions

• 0 One Solution

Find the zeros of the equation: 
(x+10)(x-2) = 0

• 10 and 2

• -2 and 10

• -10 and 2

• -2 and -10

If there are no real solutions, the discriminant is

• zero

• a postive number

• a negative number

• a perfect square

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

Solve using the quadratic formula :

x² - 7x + 12 = 0

• x = 3, -4

• x = -3, 4

• x = 3, 4

• x = -3, -4

If the discriminant is equal to -2, how many solutions are there?

• No Solutions

• 1 Solution

• 2 Solutions

• Infinite Solutions