SOLUTION: Try to find a number for x that when substituted in the formula X² - x + 23 yields a composite number.

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Question 599290: Try to find a number for x that when substituted in the formula X² - x + 23 yields a composite number.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Plug in various values of x (start at x = 1 and increment by 1, so plug in x = 2, then x = 3, etc..) and make the following table. 


            x           y
------------------------------------
            0           23
            1           23
            2           25
            3           29
            4           35
            5           43
            6           53
            7           65
            8           79
            9           95
           10          113


Looking at the table above, we can see that when x = 2, y = 25 (which is a composite number). So x%5E2-x%2B23 is composite when x=2