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# Comparing irrational numbers with radicals

Learn how to sort a bunch of numbers (4√2  2√3  3√2  √17  3√3  5) from least to greatest without using a calculator.

## Want to join the conversation?

• At , why is it just answer 17 but at , 5 is 25?
• He is squaring each number. So at he squares the squared root of 17, the square root of 17x the square root of 17 equals 17. The square root of 17 is a number slightly bigger than 4, because 4x4 equals 16, so this is just a little bit more than that.

At he square 5.
5x5=25

The concept is that if you square each number you can compare the numbers without the radical signs........
• how many times did he say square?
• It might be wrong, but I think it was 67 time!

***I counted it all, but it may be inaccurate!***
• this is so confusing, but ill try to understand
• You got this
• I am so confused.All I hear is square this and square that
• okay an odd statement however if you turn on German subtitles at it says damit kann
• The videos confuse me even more 😋😋😋😋
• It's quite simple. He was using examples of square roots (besides the 5) and wanted to know the least to greatest numbers. He used a similar method as the one for finding a common denominator, but instead of multiplying, he squared everything to keep it equivalent.
• this was a fairly easy cocept to grasp. thanks for explaining it well