Solving Quadratics

What is this formula?

• This is the speed of light formula.
• This is the quadratic formula.
• This is the zero product property.
• This is scary.

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

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

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

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• Suzanne made no errors.
  

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What is one of the solutions to this equation?

(x - 3)² = 49

• 7

• -7

• -4

• 4

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

What is the first step to solving THIS equation by completing the square?

x² + 10x + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add x² and 10x together

• Subtract the 21

Solve the following quadratics equation by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2