Prove that (a) x 2 + 3x 10 (7/2) 2 (b) 18 + 4x
Question:
Prove that
(a) x2 + 3x – 10 ≥ – (7/2)2
(b) 18 + 4x – x2 ≤ 22
(c) x + 4/x ≥ 4 where x > 0
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