Question

dau coroana plz
Am nevoie urgent

Answer 1

Rezolvarea este anexata.

Answer 2

a)

( √2 + √3 )² + ( 1 - √6 )² = 2 + 2√6 + 3 + 1 - 2√6 + 6 = 6 + 6 = 12

b )

( √6 - 1 )² - ( √2 - √3 ) ² = 6 - 2√6 + 1 - ( 2 - 2√6 + 3 ) = 7 - 2√6 + 2√6 - 5 = 2

c)

( √7 + 3√2 )² + ( 3 - √14 ) ² = 7 + 6√14 + 9 × 2 + 9 - 6√14 + 14 = 34 + 14 = 48

d)

( 2√3 - √5 )² - ( √15 + 2 )² = 4 × 3 - 4√15 + 5 - 15 - 4√15 - 4 =

= 12 + 5 - 15 - 4 - 8√15 =

= - 2 - 8√15 =

= - 2 ( 1 + 4√15 )