Best Way to Solve a Quadratic

What are the x-interepts for the graph of the function:  y = x² - 3x - 10 

• -5, 2

• -5, -2

• 5, -2

• 5, 2

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What is the vertex of the parabola:
y = -12x + 22 + 2x²

• (3,4)

• (-3,4)

• (3, -4)

• (-3,-4)

Solve using the Quadratic Formula:

2x² − x − 3 = 0

Tags

CCSS.HSA-REI.B.4B

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

Tags

CCSS.HSA-REI.B.4B

• No real solutions

Tags

CCSS.HSA-REI.B.4B

• x= -7, x=3

• x=7, x=3

• x=7, x=-3

• none of the above

Tags

CCSS.HSA-REI.B.4B

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

• discrim

• determinant

• discriminant

• none of these

Tags

CCSS.HSA-REI.B.4B

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

• 0

• 1

• 2

• 5

Tags

CCSS.HSA-REI.B.4B

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

• 76

• -7

• 9

• none of these

Tags

CCSS.HSA-REI.B.4B

Solve by factoring

• -4, 2

• -2, 4

• -16

• -4

Tags

CCSS.HSA-REI.B.4B