How do you simplify #(3sqrt7 - 6sqrt5)(4sqrt7 + 8sqrt5)#?
1 Answer
May 18, 2018
Explanation:
Simplifying would mean getting rid of as many square roots as possible. We should, therefore, multiply it out.
First we note that 3 is common in the first parenthesis, and 4 is common in the second. Therefore:
You should know that
which means that
Therefore
Ergo