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19 votes
19 votes
Multiply 6−√5 by its conjugate and simplify

User DougA
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1 Answer

8 votes
8 votes


6 - √(5) * (6 + √(5) )/(6 + √(5) )


\frac{(6 - \sqrt[]{5})(6 + √(5) ) }{6 + √(5) } = (36 - 5)/(6 + √(5) ) = (31)/(6 + √(5) )

User Beertastic
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