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Answer:
536
Step-by-step explanation:
a^3-b^3= (a-b)(a^2+b^2+ab)
using this indentity
x^3-(1/x)^3= [x-(1/x)][x^2+(1/x)^2+1].....1
now
[x-(1/x)]^2= x^2+(1/x)^2-2
x-(1/x)=√66-2=√64 = 8
pluging x-(1/x) in eq 1
x^3-(1/x)^3 = [8][66+1]
8*67
536
hope it helps u
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Answered by
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Answer:
536
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