Solving Quadratic Review

How many roots does the following equation have:

 $2x^2+6x=11$  

• 2 Complex Solutions

• 1 Real Solution

• 2 Real Solutions

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

How many solutions does this equation have?

• 2 Real Solutions

• 1 Real Solution

• 2 Complex Solutions

Tags

CCSS.HSA-REI.B.4B

What is the discriminant of the quadratic formula?

• b²-4a
• b²-4ac
• b-4ac
• b²-ac

Tags

CCSS.HSA-REI.B.4B

What could be the discriminant of this graph?

• 16

• 0

• -7

• 8

What could be the discriminant of this graph?

• 5

• 0

• -6

• - 4

 Use the quadratic formula to solve the quadratic equation.

 $x^2-5x-14=0$  

Select all the solutions.

• x = 7

• x = 2

• x = -2

• x = -7

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic equation using the Quadratic Formula.

 $x^2-x-3=0$  

•  $x=\frac{1\pm i\sqrt{11}}{2}$  

•  $x=\frac{2\pm\sqrt{13}}{1}$  

•  $x=\frac{2\pm\sqrt{11}}{1}$  

•  $x=\frac{1\pm\sqrt{13}}{2}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve using the square root property.
 $x^2+64=0$  

•  $x=8$  

•  $x=-8\ \ \ \ \ \ \ \ \ x=8$  

•  $x=8i\ \ \ \ \ \ \ \ x=-8i$  

•  $x=-8$  

Tags

CCSS.HSA-REI.B.4B

What does  $i$  equal?

•  $\sqrt{-1}$  

•  $-1$  

•  $-i$  

•  $1$  

Tags

CCSS.HSN.CN.A.1

Solve using the square root property.

2(x - 4)² = 200

• ±10

• -14, 6

• -6, 14

• 100

Tags

CCSS.HSA-REI.B.4B