Calculati
a) (2√20-3√45):(5√5)
2 Calculati media aritmetica a numerelor:
a=√45 si b=√125
Comparati numerele
a= |√6-2|+|√6-3|+√6-4|+|√6+1|
b= √(2√3-3)²+√(√3-5)²+√(2-√3)²