Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Let 7 root 5 be rational
7root5=a/b    {where a $ b are co-prime integers and b is not equal to 0}
since a $ b are integers, a/7b is rational, so root5 is also rational. But this contradicts the fact that root5 is irrational.
Hence 7root5 is irrational.
0 0 0
Let assume that 7root 5be rational. for a rational number the formula is a/b
root 5=a/b
because,7,a,andb are integers so therefore a/7b is a rational number
so ,root5 is rational number
this assumption that the fact root 5is irrational. so our assumption is not correct.
1 5 1
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts