ALG
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Solve. Write the solution set using interval notation.
x2 + 16x + 64 > 0
Solve. Write the solution set using interval notation.
x − 4/
(x + 1)(x − 1) ≤ 0

Steve
(x+8)^2 > 0
This is true for all x ≠ 8, so
(∞,8)U(8,∞)
(x4) / (x1)(x+1) <= 0
(∞,1)U(1,4]
http://www.wolframalpha.com/input/?i=%28x4%29+%2F+%28%28x1%29%28x%2B1%29%29+for+2+%3C%3D+x+%3C%3D+5
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