I need help simplifying this radical expression: 3√12 + √27 - 2√20 Thanks in advance!

2 Answers

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mathace | (Level 3) Assistant Educator

Posted on

Given: `3sqrt(12)+sqrt(27)-2sqrt(20)`

Simplify the roots. When selecting factors, choose one factor that is a perfect square.




Combine like terms.


The answer is: `9sqrt(3)-4sqrt(5)`

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oldnick | (Level 1) Valedictorian

Posted on


`3sqrt(2^2xx3)+sqrt(3^2xx3)-2sqrt(5xx2^2)=` `3xx2sqrt(3)+3sqrt(3)-2xx2sqrt(5)=`