5. For positive real numbers a, b, c, prove that
top left hand corner and your name, initials and
(a
2+ b
2)
2≥ (a + b + c)(a + b − c)(b + c − a)(c + a − b).
school in the top right hand corner.
• Complete the cover sheet provided and attach it to
the front of your script, followed by your solutions
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