Question

Orice ex puteti de aici.Urgent.Dau Coroana​

Answer 1

Răspuns:

27. √27+√12-√75 = √9x3+√4x3-√25x3 = √3²x3+√2²x3-√5²x3 =

= 3√3+2√3-5√3 = 0 ;

28. 2√8+3√18-13√2 = 2√2²x2+3√3²x2-13√2 = 4√2+9√2-13√2 = 0 ;

29. √2(√2+√3)-√3(2√3+√2) = √4+√6-2√9-√6 = 2-2x3 = 2-6 = -4 ;