2011 HCI P1 Q3
2011 HCI P1 Q3
6 marks
Prelims
Solve the inequality \(\frac{{{x}^{2}}-2x-15}{(x+5)(x-1)}\le \frac{1}{2}\). Hence solve the inequality \(\frac{{{x}^{2}}+2x-15}{(x+7)(x+1)}\le \frac{1}{2}\).[6]
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Answer:\({-5 < x \leq -2.40}\) or \({1 < x \leq 10.4}\); \({-7 < x \leq -4.40}\) or \({-1 < x \leq 8.40}\)
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