if a upon B + b Upon A is equal to -1 prove that a cube- b cube is equal to zero
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a/b+b/a =-1
a square +b square upon =-1
a square +b square =-ab
to find = a cube -b cube
=(a-b)(a square +b square +ab)
=(a-b)(0)
=0
hence proved that a cube - b cube =0
a square +b square upon =-1
a square +b square =-ab
to find = a cube -b cube
=(a-b)(a square +b square +ab)
=(a-b)(0)
=0
hence proved that a cube - b cube =0
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