Răspuns
a) √10/2;
b) √14/10
Explicație pas cu pas:
a)
[(5+2√5)/2√5 - (3√5 +5)/3√5]'.3√3/5 =
Aducem la acelasi numitor:
[(15√5 + 30 - 30 - 10√5)/6.√5].3√10/5=(5√5/6.√5).3√10/5 =
= 5/6. 3√10/5= √10/2;
b)
[(5 -2√2)/4√2 - (7-3√2)/6√2]:5/6√14 =
Aducem la acelasi numitor:
[(15√2- 12 - 14√2 - 12)12√2 ].6√14/5= (√2/12√2).6√14/5=
= √14/10
