Question

rationalizati numitorii dau 55 puncte si coroana

a)5supra√3
b)10supra√5
c)-6supra√6
d)6√3supra-√2
e)8√3supra2√6
f)4√3+√12supra√3
g)15√3+3supra√75

Answer 1

a) = 5√3/√3√3 = 5√3/3

b) = 10√5/5 = 2√5

c) = -6√6/6 = - √6

d) = 6√3√2/-2 = -3√6

e) = 8√3√6/2×6 = 8√18/12 = 24√2/12 = 2√2

f) = √3(4√3+√12)/3 = (4×3+√36)/3 = (12+6)/3 = 18/3 = 6

g) = (15√3+3)/ 5√3 = √3(15√3 +3)/15 = (45+3√3)/15 = 3(15+√3)/15=15+√3/5