CBSE Class 10 Answered
Prove that √p + √q is irrational, where p,q are primes.
Asked by rishijuneja2018 | 14 Apr, 2018, 08:51: PM
Expert Answer
Solution
Let √p + √q is rational number
A rational number can be written in the form of a/b
so
√p + √q = a/b
√p = a/b - √q
√p = ( a - b √ q ) /b
p, q are integers then ( a - b √q ) /b
it is a rational number
So √p is also rational number
So it contradicts that √p + √q is irrational number
So it is false that it is irrational number
it is a rational number √p
hope it helps
thank you ......
Answered by Arun | 15 Apr, 2018, 01:08: PM
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