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Solve the inequality k^2 - 7k + 12.25 > 0.

 Feb 14, 2021
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We can see that k2 - 7k + 12.25 is a perfect square polynomial. This means:

 

k2 - 7k + 12.25

= (k - 3.5)2

 

(k - 3.5)2 > 0 

k - 3.5 > 0  or k - 3.5 < 0

 

k > 3.5  or  k < 3.5

 Feb 14, 2021

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