please help this math question
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hey your ans is here
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given
a-1/a=8
a3-1/a3=?
apply the identity
(a-1/a)3=a3-1/a3-3(a-1/a)
(8)3=a3-1/a3-3(8)
512=a3-1/a3-24
512+24=a3-1/a3
536=a3-1/a3
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--------
given
a-1/a=8
a3-1/a3=?
apply the identity
(a-1/a)3=a3-1/a3-3(a-1/a)
(8)3=a3-1/a3-3(8)
512=a3-1/a3-24
512+24=a3-1/a3
536=a3-1/a3
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