CLASSWORK 11.6 DAY-1

 $x^2-6x+4=0$  

•  $3\pm\sqrt{5}$  

•  $\frac{6\pm\sqrt{20}}{2}$  

•  $3\pm\sqrt{20}$  

•  $3\pm i\sqrt{13}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

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

• a = 2 , b = 3, c = -5

• a = 2, b = -3, c = 5

• a = 2, b = -3, c = -5

• a = -2, b = 3, c = 5

Identify the 'a' value: y = 16x² -8x -24

• 16
• 8
• -8
• -24

Identify the 'b' value: y = 16x² -8x -24

• 16
• -8
• 8
• -24

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

The quadratic equation can be used to solve quadratic equations that cannot be factored.

• True
• False

Tags

CCSS.HSA-REI.B.4B

What is this formula?

• This is the standard formula.

• This is the quadratic formula.

• This is the square root formula.

• This is the Pythagorean formula

Tags

CCSS.HSA-REI.B.4B

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

 Solve by using the Quadratic Formula: $x^2=3x-1$ 

•  $x=\frac{3\pm5}{2}$  
  

•  $x=4,\ -1$  
  

•  $x=\frac{3\pm\sqrt{5}}{2}$  

•  $x\ =\ \frac{3\pm\sqrt{13}}{2}$  
  

Tags

CCSS.HSA-REI.B.4B