cube root of -571787
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Not going go into detail...
Vedic maths!!
Cube of 80 is 512000...known to us!
cube of 90 is 729000...known to us!
571787 lies between them
hence number at ten's place is 8
But digit at units place is 7 in question which is only seen in cube of 3
Hence from all above we may conclude that cube root of 571787 is 83
While cube root of -571787 is -83
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cube root of 571787 =83
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