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rational numbers  TOPIC_SOLVED

Hello and sorry if I'm not posting in the right section, but I have the following problem:
If a and b are rational numbers and sqrt from a+b does Not equal 0, how do I demonstrate that sqrt from a-b does not equal 0?
by smara1403
on Sat Sep 21, 2013 5:12 pm
 
Forum: Advanced Algebra ("pre-calculus")
Topic: rational numbers
Replies: 3
Views: 1206

Re: rational numbers  TOPIC_SOLVED

no, i'm sorry
i meant a+sqrt(b) !=0 and prove a-sqrt(b)!=0, where sqrt stands for square root and != for does not equal
i'm sorry for my terminology, but i'm not used to the english one
by smara1403
on Sun Sep 22, 2013 4:49 pm
 
Forum: Advanced Algebra ("pre-calculus")
Topic: rational numbers
Replies: 3
Views: 1206

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