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(x – 1/x)2 = 3 => (x2 + 1/x2) – 2 = 3 (x2 + 1/x2) = 5 ∵ and we know that if (x + 1/x) = a then (x3 + 1/x3) = a3 – 3a => (x2 + 1/x2) = 5 => (x6 + 1/x6) = (5)3 – 3 × 5 = 110
To feel under the weather
enlarge upon or add detail tosomething
HEAD AND SHOULDERS ABOVE
I) The new model is head and shoulders above its competitors in terms of both quality and design.
Widely known and esteemed
Cool heels
Ask for or request earnestly
After weeks of practice, the team was finally able to get their act together before the big game.
