X3+1/X3=4 then find value X6-1/X6=?
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x³ + 1/x³ = 4
squaring both sides
( x³ + 1/x³ )² = 16
x^6 + 1/x^6 + 2( x³ × 1/x³ ) = 16
x^6 + 1/x^6 = 16 - 2 = 14
squaring both sides
( x³ + 1/x³ )² = 16
x^6 + 1/x^6 + 2( x³ × 1/x³ ) = 16
x^6 + 1/x^6 = 16 - 2 = 14
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