How do you simplify #3\sqrt { 3} \cdot 4- 3\sqrt { 5}#?

1 Answer
Surya K.
Nov 6, 2017

#12sqrt(3) - 3sqrt(5)#

Explanation:

Since #3sqrt(3)# is basically #3*sqrt(3)#, the #3# can be multiplied with #4#, to give #12sqrt(3)#. We can't subtract #3sqrt(5)# due to different coefficients, and so it stays as is.
Therefore, the answer is #12sqrt(3) - 3sqrt(5)#.

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