Question

1.Efectuati : a) 5pe√5+20pe√20-15pe√15+50pe2√125
b) 3pe√3·(1pe√3-√4pe√3-√0,(3)+1,(6)·√3 ) . Faceti toate calculele , va rog dau coroana
2.Comparati numerele a si b , unde : a=|√5-2| si b=√45 +√9+2√20-√49-√180 .
Daca nu stiti 1 faceti-l pe 2 si daca nu stiti 2 faceti-l pe 1 , plss :)

Answer 1

1.
a) 5/√5+20/√20-15/√15+50/2√125 =
=5/√5+40/√5-√15+50/10√5 =
=45/√5-√15+5/√5 =
=45/√5-√15+√5 =
=46/√5-√15

 b) 3/√3·(1/√3-√4/√3-√0,(3)+1,(6)·√3 ) =
=√3·(√3/3-2√3/3-√3/3+5/3·√3  =
=√3·(3√3/3)  =3

2. a=|√5-2| =√5-2
√5-2>0  |√5-2| =√5-2

b=√45 +√9+2√20-√49-√180 = 3√5 +3+4√5-7-6√5 = √5 -4

a>b

Answer 2

Sper ca ai inteles. Coronita?