Question

Efetue: a) √75+√12 b) √75-√12 c) √75 .√12 d) $\frac{ \sqrt{75} }{ \sqrt{12} }$ e) (2√5)³ f) √√81

Answer 1

(sqrt?(75) + sqrt(48) + sqrt(27)) / 6.sqrt(3) 

(sqrt(25. 3) + sqrt(16. 3) + sqrt(9. 3)) / 6.sqrt(3) 

(5.sqrt(3) + 4.sqrt(3) + 3.sqrt(3)) / 6.sqrt(3)
sqrt(3).(5 + 4 + 3) / 6.sqrt(3)

(5 + 4 + 3) / 6 

12/ 6 

2

alternativa B