f a, b, c are positive real numbers such that a + b + c = 1, prove 8 8abc 27 (1a) (1 - b)(1 − c) ≤ -

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Q: Prove that a b + 2c + 3d + c+ 2d + 3a Let a, b, c, d be positive real numbers. C d + 2a + 3b + d a +…

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Q: b) Prove that |x| ≤ 1 implies that |x² + 2x - 3| ≤ 4|x − 1].

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A: According to our guidelines we can answer only one question and rest can be reposted.

Q: 3. Show that all integers n ≥ 2 can be expressed as 2x + 3y for some nonnegative integers r and y.

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Q: |u|> c is true for all real numbers if c _ 0.

A: |u|>c is true for all real numbers if c ____ 0.