√121 =
11
(−2, 5) ∩ (1, 7) =
(1,5)
[−2,2]∩[1,4]=
[1,2]
4x - 8 = 2x - 20
x=-6
3x = 21
x=7
(−∞, 3) ∩ [1, +∞) =
[1,3)
√(144 : 4) =
6
2(x − 3) = 10
x=8
(−3,1)∪[1,5]=
(−3,5]
5x + 10 = 2x + 25
x=5
(−4,4)∪[3,6]
∅
3√4 =
6
7x + 3 = 4x + 12
x=3
2x+4=10
x=3
√(81 · 25) =
45
√50 simplificat =
5 radical din 2