1)4 0 1 2 -5 1/2
2)3 0 1 12 -3 2
3)2 0 1 8 -3 3
4)2 0 1 4 -2 2
5)2 0 1 2 -4 3
6) log₂(20/15*24)=log₂32=5 log₁₄(14²)^1/3=2/3 4*3=12
7) log₃(18*12/8)=log₃27=3 log₇(7²)^1/3=2/3 5*2=10
8) log₄(12/15*20)=log₄16=2 log₆(6³)^1/2=3/2 25*2=50
9) log₅(10/6*15)=log₅25=2 log₈(8²)^1/3=2/3² 8*3=24
10)log₄(28/21*12)=log₄16=2 log₁₆(16²)^1/3=2/3 9/2=4,5
(a-2)(a+2)-2(a²-a)= a²-4-2a²+2a= -a²+2a-4
|x+1|>3;
x+1>3;
x>2;
-
x+1<-3;
x<-4;
=
|2x+1|<=1;
2x+1<=1;
2x<=0;
x<=0;
-
2x+1>=-1;
2x>=-2;
x>=-1