(V50)^2. (7)^2
(50^1/2)^2=50
7^2=49
50>49
V50>7
(7v2)^2 (5v7)^2
49*2. 25*7
98. 175
98<175<br>7v2<5v7<br>
2) 14 -5*0,6=14-3=11
0,5*2v3 -2*3v3+5v3=
V3 -6v3+5v3= -5v3+5v3=0
3) (v11)^2 - (v3)^2=
11-3=8
2(v3)^2 - 3(v3)^2=
2*3 -3*3=6-9= -3
16 -2*4*v5 + (v5)^2=
16-8v5+5= 11-8v5
5) 3*2v7 -3-3*2v7-3
------------------------ =
(2v7)^2 -1^2
-6
=. ------------ = - 6/27
28 -1