= a/b + b/a
= a² + b²/a.b
= (a+b)² - 2a.b/a.b
= (4²) - 2(2)/2
= 16 - 4/2
= 12/2
= 6
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= a/b + b/a
= a² + b²/a.b
= (a+b)² - 2a.b/a.b
= (4²) - 2(2)/2
= 16 - 4/2
= 12/2
= 6