How do you determine the values of a, b, and c in the expression 2x squared plus 5x plus 8?
Deriving the Quadratic Formula by Completing the Square

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Mathematics
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9th - 10th Grade
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Hard
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7 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain the process of completing the square for the expression x squared plus 6x plus 9.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the significance of taking half the b term and squaring it in the context of completing the square?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the first step in deriving the quadratic formula?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Describe how to combine fractions when deriving the quadratic formula.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
In the context of the quadratic formula, what does the term 'negative b plus or minus the square root of b squared minus 4ac' represent?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
What does the final form of the quadratic formula look like after completing the square?
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