How do you simplify (12sqrt5-7sqrt7)+(6sqrt5-7sqrt7)?

1 Answer
Jul 9, 2018

18sqrt5-14sqrt7

Explanation:

The parenthesis are unnecessary, thus we have

color(purple)(12sqrt5)color(steelblue)(-7sqrt7)+color(purple)(6sqrt5)color(steelblue)(-7sqrt7)

Next, we can combine like terms to get

18sqrt5-14sqrt7

Since our radicals have no perfect squares in them, we are done!

Hope this helps!