expand it
formula plzz
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a3 + 1/a3
by using the identity a3+b3=(a+b)(a2 - ab + b2)
we get
(a3 +1/a3)( (a3)2 - (a3)(1/a3) + (1/a3)2 )
(a3+1/a3)(a6 - a + 1/a6)
by using the identity a3+b3=(a+b)(a2 - ab + b2)
we get
(a3 +1/a3)( (a3)2 - (a3)(1/a3) + (1/a3)2 )
(a3+1/a3)(a6 - a + 1/a6)
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