Rational & Irrational Numbers

Set 1.1

 

correct

 

I am afraid that you and mathlover1 are both misreading the problem! The problem specifically said that a and b must both be irrational numbers! 3 and 4 are of course rational. An example of two irrattional numbers whose some is rational is are a= sqrt{3} and b= -\sqrt{3}. Another example is 5+ 3sqrt{7} and 8- 3sqrt{7}.

 

you are right, a and b must both be irrational numbers......thank you (it happens sometimes, English is not my native language)

 

I thank you for pointing out my error.

 

Your English is far better than my (put pretty much any language here- maybe even English).

 

Thank you very much for kind words. What is your native language?

 

English! (and native English speakers are notoriously bad at it.)

 

agree that some are notoriously bad at it, but not you
I assume you are math teacher, am I right?