cред аримфметич
1.4 + 1.8 + 1.1 + 2 + 4.7 + 1 + 2 + 2 = 16
16/8=2
Медиана
1.4 + 1.8 + 1.1 + 2 + 4.7 + 1 + 2 + 2 = 16
16/2 + 16/2 = 16
16=16
5х=60+0,6
5х=60,6
х=60,6:5
х=12,12
2х=-36-0.3
2х=-35,7
х=-17,85
Log2(x²-2x)≥3=log2(8)
x²-2x=x(x-2)>0 -------------0-----------2-------------
+ - +
x²-2x-8≥0 x1=4 x2=-2
← ← ↑→→→→→→→→→
---------------- -2---0----------2-------4----------------
+ - +
x∈(-∞;-2]∪[4;∞)