Hey!
Hope this helps...
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x^2 - 14x > 15
x^2 - 15x - 15 > 0
(x + 1)(x -15) > 0
<em>If we take a stance and say BOTH POSITIVE, we see</em>
<em>x > -1 OR x > 15</em>
<span><em>In this case </em><em>x > 15</em><em> is the dominating factor...</em></span>
<span><em>
</em></span>
<em>If we take a stance and say BOTH NEGATIVE, we see...</em>
<em>x < -1 OR x < 15</em>
<span><em>In this case </em><em>x < -1</em><em> is the dominating factor...</em></span>
<span><em>
</em></span>
<em>Now combine the 2 proven factors, we get...</em>
<em>x < -1 OR x > 15</em>
So...
The answer is: D.) x<-1 or x>15
