Quadratic Formula

In the equation
 $x^2+5x+7\ =0$   match each leading coefficient with its correct letter 

•  $a=0,b=5,c=7$  

•  $a=1,b=5,c=7$  

•  $a=7,b=5,c=1$  

•  $a=x^2,\ b\ =\ 5x,\ c\ =\ 7$  

Tags

CCSS.HSA.REI.B.4

 $16x^2-8x-24\ =\ 0$  Identify the 'a' value:

• 16

• 8

• -8

• -24

Tags

CCSS.HSA-REI.B.4B

How many x-intercepts does this parabola have?

• 2 solutions

• 1 solution

• no solution

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

How many x-intercepts does this parabola have?

• 2 solutions

• 1 solution

• no solution

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11

What is the missing number in the formula for the quadratic equation,   $2x^2+2x-12=0$  ?
 $x\ =\frac{-2\ \pm\sqrt{\left(\ ?\right)^2-4\left(2\right)\left(-12\right)}}{2\left(2\right)}$  

• 2

• -12

• 4

• -2

Tags

CCSS.HSA-REI.B.4B

What is the missing number in the formula for the quadratic equation,  $5x^2-x\ +7\ =\ 0$  ?
 $x\ =\frac{?\pm\sqrt{\left(\ -1\right)^2-4\left(5\right)\left(7\right)}}{2\left(5\right)}$  

• 7

• 5

• -1

• 1

Tags

CCSS.HSA-REI.B.4B

What are the final solutions for  $x\ =\frac{-2\pm\sqrt{100}}{4}$  ?

•  $x\ =\ \frac{1}{2},\ x\ =\ -\frac{1}{3}$  

•  $x=-2,\ x\ =\ 3$  

•  $x=-3,\ x=2$  

•  $x\ =\ -\frac{1}{2},\ x\ =\ \frac{1}{3}$  

Tags

CCSS.HSA-REI.B.4B

 $x\ =\ \frac{-3\pm\sqrt{-11}}{10}$  

How many solutions would there be?

• 1 solution

• 2 solutions

• no solution

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

 $x\ =\ \frac{6\ \pm\sqrt{36-36}}{2\left(3\right)}$  How many solutions would there be?

• 1 solution 

• 2 solutions

• no solution 

Tags

CCSS.HSA-REI.B.4B

 $x^2-5x\ -14\ =\ 0$  

Determine the x-intercepts by completing the quadratic formula. 
 $x=\ \frac{5\ \pm\sqrt{\left(-5\right)^2-4\left(1\right)\left(-14\right)}}{2\left(1\right)}$  

•  $x=\frac{5\pm\sqrt{-31}}{2}$  

•  $x\ =\ -7,\ x\ =\ 2$  

•  $x\ =\ 7,\ x\ =\ -2$  

•  $no\ solution$  

Tags

CCSS.HSA-REI.B.4B