How do i write n squared is greater than 18

Note

The open end of the < and > sign always opens up towards the largest amount. In this case n^2 is bigger than 18 so the expression you want is n^2>18.

This tells you that n^2 is larger than 18. Just to make it clearer suppose n = 5

Then what you get is 5^2 > 18? Is that true? 25 > 18 so yes it is true. 4^2 is not a solution because 4^2 = 16 which is smaller than 18.

One thing you should be aware of (-5)^2 > 18 is also true.

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