E\(=5,5.\left(-1,6\right)\)=-8,8

\(E=5,5.2-5,5.3,6\)=11-19,8=-8,8

F= -3,1.(-2,7)=8,37

F=-3,1.3+3,1.5,7=-9,3+17,67=8,37

C là đúng

=12345,4321.(2468,91011-2468,91011)

=12345,4321.0

=0

ta có: 5,7.(7,865.31,41)= \(5,7.7,865.31,41\)

\(\left(5,7.7,865\right).\left(5,7.31,41\right)\)= \(5,7.7,865.5,7.31,41\)

vì \(5,7.7,865.31,41=5,7.7,865.31,41\)

\(\Rightarrow5,7.7,865.31,41< 5,7.7,865.5,7.31,41\)

\(\Rightarrow5,7.\left(7,865.31,41\right)=\left(5,7.7,865\right).\left(5,7.31,41\right)\) là sai

A2

B5

C4

D3

(A) -300

\(|a+b-c|\)=1

\(|a-b+c|\)=11

\(|a-b-c|\)=7

a) \(x\le2\)

b) \(x\le0\)

c) \(x\ge0\)

d) \(x\ge0\)