(<em>x</em> + 1/<em>x</em>)² = <em>x</em> ² + 2 + 1/<em>x</em> ² = 10 + 2 = 12
==> <em>x</em> + 1/<em>x</em> = ±√12
Answer:
142.
Step-by-step explanation:
=12×71/3×2
=852/6
=142
I think its A but im not sure