How do you evaluate 2sqrt3-4sqrt22√3−4√2?

1 Answer
hev1
Mar 24, 2018

There is no way to evaulate this without a calculator because 2sqrt(3)2√3 and 4sqrt(2)4√2 are already in their simplest form and do not have a radical in common. Using a calculator, 2sqrt(3) - 4sqrt(2) ~~ -2.192√3−4√2≈−2.19

Explanation:

To add or subtract radicals, the radicals must be simplified and can only be added when they have a common radical. Just like you can only combine like terms in algebra, you can only combine like radicals. Read this for more information.

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