What is the conjugate of 5?

1 Answer
Aviv S.
Apr 7, 2018

The conjugate of #5# is #5#.

Explanation:

When dealing with irrational numbers in the form of #a+sqrtb#, the conjugate is #a-sqrtb#.

When dealing with imaginary numbers in form of #a+bi#, then conjugate is #a-bi#.

No matter if you express #5# as an irrational number (#5+sqrt0#) or as an imaginary number (#5+0i#), then conjugates will be equal to #5# either way (#5-sqrt0# and #5-0i#).

Therefore, the conjugate of #5# is #5#.

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