a) x = √3
( √3 - 1 )( x + 1) = 2
( √3 - 1 )( √3 + 1) = ( √3)² - 1² = 3 - 1 = 2 , deci verifica relatia
b) p = ( 1 supra √2 + 1 ) la puterea 2a + ( 1 supra √2 - 1 ) la outerea 2a =
= ( √2 - 1 supra ( √2 + 1)( √2 - 1) ) la puterea 2a + ( √2 + 1) supra
( √2 - 1)( √2 + 1) = , se rationalizeaza fractiile
= (√2 - 1 ) la puterea 2a + ( √2 + 1) la putera 2a