Solving Quadratics: Quadratic Formula

• No Solution

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CCSS.HSA-REI.B.4B

• -8
• 4
• -10
• -4
• 8
• 10
• 5
• -5

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CCSS.HSA-REI.B.4B

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CCSS.HSA-REI.B.4B

• No Solution

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CCSS.HSA-REI.B.4B

​Complete the quadratic formula

Black question mark ​ (a)  

Blue question mark ​ (b)  

Red question mark ​ (c)  

Tags

CCSS.HSA-REI.B.4B

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.

Tags

CCSS.HSA-REI.B.4B

In the equation
y = x² +5x +7, the leading coefficients are a= (a)   , b= (b)   , c= (c)   .

• a=0, b=5, c=7
• a=1, b=5, c=7
• a=7, b=5, c=1

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

Match each leading coefficient with its correct letter in the equation
y = x² +5x +7.

• In the equation y = x² + 5x + 7, identify the coefficients.

• a=1, b=5, c=7

• In the equation y = 5x² + x + 7, identify the coefficients.

• a=7, b=5, c=1

• In the equation y = 7x² + 5x + 1, identify the coefficients.

• a=5, b=1, c=7

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6
• x = -5/2, x =5
• x = -3/7, x =6
• x = -5/2, x = 7

Tags

CCSS.HSA-REI.B.4B