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Precalculus Mathematics Homework Help
Solve Inequalities Problem: x ∈ (-2,-1) ∪ (⅔, -½)
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[QUOTE="Ray Vickson, post: 5454320, member: 330118"] How do you know you can go from ##\dfrac{2x}{2x^2 + 5x + 2} - \dfrac{1}{x + 1} > 0## to ##\dfrac{2x(x+1) - (2x^2 + 5x + 2)}{(2x^2 + 5x + 2)(x + 1)} > 0##? Certainly, if you multiply both sides of an inequality by a positive quantity, the inequality remains unchanged in direction. However, if you multiply both sides by a negative, the inequality is reversed. [/QUOTE]
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Precalculus Mathematics Homework Help
Solve Inequalities Problem: x ∈ (-2,-1) ∪ (⅔, -½)
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