Question

if a and b are natural number then( √a+√b) (√a-√b) is rational is it true ? plzz give me explanation also​

Answer 1

Answer:

ya it is true

$( \sqrt{a + \sqrt{b} } )( \sqrt{a - \sqrt{b} } ) \\ \sqrt{a {}^{2} - \sqrt{b {}^{2} } } \\ a - b$

Answer 2

yes..it's true.. here's the solution