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If 5x + x² > 100, then x is not???

 

 

10

8

7

9

?

 May 2, 2017
 #1
avatar+99659 
+1

5x + x^2  > 100

 

x^2 + 5x - 100 >  0

 

Look at the graph, here : https://www.desmos.com/calculator/daxx3oueqj

 

Note that this is true for all of the listed values except  when x = 7

 

 

cool cool cool

 May 3, 2017

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