Răspuns:
a) 2√3+3•4√3 = 2√3+12√3 = 14√3
b) 5√2-2√2•2 = 5√2-4√2 = √2
c) √6•(3√5-2√5)-√2•√15 = √6•√5-√30 = √30-√30 = 0
d) (4√2-√2)•√2+√2•√18 = 3√2•√2+√36 = 3•2+6 = 6+6 = 12
e) √3•(2√5+3√5)-√5•(√3+2√3) = √3•5√5-√5•3√3 = 5√15-3√15 = 2√15
f) 2•(√12-√3)+(√27-√48)•3 =
= 2•(2√3-√3)+(3√3-4√3)•3 = 2√3-√3•3 = 2√3-3√3 = -√3.
EVERGREEN
