Question

Daca B=radical 16 supra 9 plus radical 25 supra 9 minus radical 36 plus radical 64

Answer 1

B = ( √16 / 9 ) + ( √25 / 9 ) - √36 + √64 =

B = ( √16 / √9 )  + (  √25 / √9 ) - √36 + √64

B = ( √4² / √3² ) + ( √5² / √3² ) - √6² + √8²

B = ( 4 / 3 + 5 / 3  ) - 6 + 8

B = 9 / 3 - 6 + 8

B = 3 - 6 + 8

B = -3 + 8

B = 5