#### Answer

We solve the polynomial inequality ${{x}^{2}}+8x+15>0$ by first solving the equation $f\left( x \right)=0$. The real solutions of the equation, -5 and -3, shown on the number line, are called boundary points.

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Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

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