ta có: \(\left|x+1\right|+\left|2x-3\right|\ge\left|x+1+2x-3\right|\)

\(\ge\left|3x-2\right|\)

mk k nho doan sau nen du vao nha

mk xl

8 x 3 = 

+ 1 x 24

+ 2 x 12

+ 4 x 6

+ 6 x 4 

+ 12 x 2

+ 24 x1

(bai dai qua nen mk tom tat thoi nha, bn tu ve roi dua vao ma giai)

a) ta co AC va FM cung vuong goc voi BH nen AC//FM => EHM = FMH

c/m tam giac FHM bang tam giac EMH (c/h-gn) => ME = FH

b) ta co AC//FM (cau a) nen goc ACB bang goc FMB vi so le trong

ma goc ACB bang goc ABC nen goc FMB bang goc DBM

c/m tam giac DBM bang tam giac FMB

c) (cau nay mk giai lun vi k bit giai thit s nua)

vì \(\Delta DBM\) = \(\Delta FMB\) (cmt)

=> MD=FB ( 2 canh tuong ung )

ma ME = FH (cau a)

=> MD+ME=BF+FH=BH

=> khi M chuyen dong tren BC thi MD+ME khong doi

d) xl nha, cau d mk k pit lm

S = 1538+3425 
Suy ra: 
S-1538 = 3425 
S-3425.= 1538