Solve the following inequalities. Give your answer as an interval or a union of intervals. No approximations may be used. a) |x – 2| < 5 b) — 20 + х< 3х — 12 <28 — c) |5x + 6| < –3x + 6

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Q: For which values of c does f(x) = x² + cx +9 have a double root? (Give your answer in the form of a…

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Q: Prove: (a) 2ab <a² + b²; (b) ab + ac + bc < a² + b² + c².

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