perplexus.info :: Just Math : Sum Reals, Get Integer

Sum Reals, Get Integer (Posted on 2016-07-09)

Find all nonnegative real numbers R such that:

³√(13+√R) + ³√(13-√R) is an integer.

Prove that there are no others.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

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re: Solution

Comment 3 of 3 |

(In reply to Solution by Brian Smith)

quotation

"This means I will always be positive."

I think this is a good decision.

Posted by armando on 2016-07-10 09:42:08

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