Quadratic Formula

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

In the equation
y = x² +5x +7, 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

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3
*remember right side should =0

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

What would be the best first step in solving this equation?

 $x^2\ +\ 6x\ -\ 13\ =\ 3$  

• Factor

• Write down: a = 1, b = 6, c = -13

• Subtract 3 from both sides.

• Add 3 to both sides.

Tags

CCSS.HSA-REI.B.4B

When a quadratic equation is graphed, it creates a

• Square

• Circle

• Parabola

• Line

Tags

CCSS.HSF-IF.C.7A

Solve the following equation:

 $x^2\ -\ 5x\ +\ 10\ =\ 0$  

•  $\frac{\left(5\ -\ \sqrt{15}\ i\right)}{2}\ \ ,\ \frac{\left(5\ +\ \sqrt{15}\ i\right)}{2}$  

•  $\frac{\left(5\ -\ \sqrt{15}\right)}{2}\ ,\ \frac{\left(5\ +\ \sqrt{15}\right)}{2}$  

•  $\frac{\left(5\ -\ \sqrt{65}\ i\right)}{2}\ ,\ \frac{\left(5\ +\ \sqrt{65}\ i\right)}{2}$  

•  $\frac{\left(5\ -\ \sqrt{65}\right)}{2}\ ,\frac{\left(5\ +\ \sqrt{65}\right)}{2}$  

Answer explanation

 $\frac{\left(5\ \pm\ \sqrt{-15}\right)}{2}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B