1.

If x²+1/x²=34 find x³+1/x³-9

Answer»

X^² + 1/x^² = 34

x + 1/x =√ (34 + 2) = 6

x^³ + 1/x^³ = (x + 1/x)^3 - 3 x/x (x + 1/x) = 6^3 - 3 * 6 = 198



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