Without using a calculator, simplify 2 square root 208 - square root 117+156/ square root 52.

The answer is 11 square root 13 but I do not know how to get the answer, please show clear working and answer, thks!
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1 Answer

(2√208-√117+156)/√52=(8√13-3√13+156)/2√13=

(5√13+12*13)/2√13=(5+12√13)/2.

This is not the answer you expected.

Or it could be 2√208-√117+(156/√52)=8√13-3√13+((12*13)/2√13)=5√13+6√13=11√13. Bingo!

How important grouping can be!

by Top Rated User (1.2m points)

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