Question

am nevoie repede va rog frumos :>​

Answer 1

Răspuns:

a)4 • 1/4 - 4/5 • 625/4 =

1 - 125 =

-124

b)15/7 + 4/7 + 15/28 - 2=

(60+16+15-56)/28=

35/28=

5/4

c)3rad6/28 : (5rad6/12 + 19rad6/42 - rad6/6 - rad6/4)=

3rad6/28 : (35rad6+38rad6-14rad6-21rad6)/84=

3rad6/28 • 84/38rad6 =

9/38

d)[(2rad5/5 - 3rad5/10 + rad5/80)•5rad5] • 16/45=

[(32rad5-24rad5+rad5)/80 • 5rad5] • 16/45=

9rad5/80 • 5rad5 • 16/45 =

1