if x+1/x = 4 then find x^3+1/x^3
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Answer:
= x3 + 1/x3 + 3( x × 1/x ) = 64
= x3 + 1/x3 + 3(1) (4) = 64
= x3 + 1/ x3 = 64- 12
= x3+ 1/ x3 = 52
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