+0  
 
0
46
1
avatar+80 

If x is an integer, what is the smallest value of the expression x^2 - 6x +13?

 Dec 26, 2018
 #1
avatar+94453 
+1

x^2 - 6x + 13

 

The x value that  minimizes this is given by   - (-6) / [ 2 * 1 ]  =  6 / 2 =  3

 

Subbing this back into the function, we have

 

(3)^2 - 6(3) + 13

 

9 - 18 + 13

 

22 - 18  =

 

4   =  the minimum value for the expression

 

 

cool cool cool

 Dec 26, 2018

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