Réponses

2014-09-11T21:28:17+02:00
D=(√2+√3)² -5
D= 
√2²+ (2*√2*√3)+ √3² -5
D= 2+2√6+3-5
D= 2√6
2014-09-11T21:28:28+02:00


Bonsoir

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