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What is the maximum value of x^2- 8x + 12?

 Jan 17, 2021
 #1
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What is the maximum value of x^2- 8x + 12?    

 

That is a parabola that opens upward.  There is no maximum value, it goes on forever.  I guess you could say infinity is the maximum but I'm reluctant to make the mistake of treating infinity as a number. 

 Jan 17, 2021
 #2
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You are right.   There is NO maximum.

Melody  Jan 17, 2021
 #3
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The maximum value of  - x^2 -8x+12    would occur at x =  -b/2a = -4   

    use this value in the equation to calculate the max value

 

Similarly , the MINIMUM value of x ^2 -8x+12 would occur at x = -b/2a = 4     calculate the min value by sub'ing in x = 4

 Jan 17, 2021

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