If p and q are prime positive integers p.t root p+root q is an irrational
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Here's your answer.. ⬇
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➡ Given :- p and q are positive prime integers.
➡ To Prove :- √p + √q is an irrational no.
➡ Proof :- Let √p + √q = a/b is a rational no.
√p = a/b - √q
Take square on both side..
( √p )² = ( a/b - √q )²
p = (a/b)² - 2a/b × √q + q
p - (a/b)² - q = - 2a/b × √q
( p - (a/b)² - q ) × b/2a = √q
rational ≠ irrational.
q is positive prime integer and root of prime no. is irrational no.
Hence, √p + √q is an irrational no.
____________________________
Hope it helps..
Thanks :)
Here's your answer.. ⬇
_______________________
➡ Given :- p and q are positive prime integers.
➡ To Prove :- √p + √q is an irrational no.
➡ Proof :- Let √p + √q = a/b is a rational no.
√p = a/b - √q
Take square on both side..
( √p )² = ( a/b - √q )²
p = (a/b)² - 2a/b × √q + q
p - (a/b)² - q = - 2a/b × √q
( p - (a/b)² - q ) × b/2a = √q
rational ≠ irrational.
q is positive prime integer and root of prime no. is irrational no.
Hence, √p + √q is an irrational no.
____________________________
Hope it helps..
Thanks :)
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