What is the squared root of 1444?

1 Answer
KillerBunny
Oct 30, 2015

#38#

Explanation:

If you can use a calculator, of course you only have to ask it, and you'll have your answer. If you can't, you must go by trial and errors, keeping in mind that you're looking for a number whose square is #1444#.

Since it's easy to remember, or to compute, that #30^2=900#, our number will surely be greater than #30#. Also, you don't need to check all the numbers: if a square of a number ends up with #4#, the number can end only with #2# or #8#. So, I tried #32^2# and #38^2#, and I found out that #38# was the right number.

Related questions
See all questions in Simplification of Radical Expressions
Impact of this question
2645 views around the world
You can reuse this answer
Creative Commons License