Răspunsuri

2014-11-09T18:54:06+02:00
Nu, aici merge formula 
(a+b)²=a² + 2ab + b²
va fi: 
( √11+√2)² = (√11)²+2*√11*√2+(√2)²= 11+2√22+2=12+2√22

ser sa te ajute...
 
1 5 1
2014-11-09T18:59:18+02:00
Nu.
Formula spune ca: (a+b)²=a²+2ab+b².
Asadar:
(√11+√2)²=11+2√22+2=13+2√22.