Tim x biet:
A. (x-3/4).(3x+1/2)lon hon hoac bang 0
B. (2x+1).(4x+3)be hon hoac bang 0
tim x
3 | x - 2 | + 2x = 19 , x lon hon hoac bang 2
Cho | x | lon hon hoac bang 3 ; | y | = 5 , x; y thuoc tap hop Z . tim x ; y
Tim so nguyen x, biet:
( x -5) .(x -10) lon hon hoac bang 0
hay viet cac tap hop sau bang cach khac
A={ 9;11;13;...;99]
B={ 12 ; 24 ; 36 ;48}
M= { THANG 4 ; THANG 6 ;THANG 9 ; THANG 11}
N = { X THUOC N / X LON HON HOAC BANG 3 , LON HON HOAC BANG 10}
Q = { X THUOC N / X LON HON 0 ,BE HON 10}
Ting tong cac so nguyen x biet :
a ) -18 be hon hoac bang x be hon hoac bang 17
b) Gia tri tuyet doi cua x be hon hoac bang 3.
Giup Minh Voi !
Tim x thuoc z
12 lon hon hoac bang /x/ <15
tim x,y thuoc Z biet
|y|.|2x+3|=8
|2x+4|+|y-3|=0
|x-1|+|2y+7|=3
|x+5|+|2y+6| nho hon hoac bang 0
tìm x thuoc Z biet
2 < = |2x - 3 | < 4 ( < = la lon hon hoac bang)
cac ban lam nhanh ho minh voi minh can gap 4 gio phai nop roi ai nhanh dung minhf tick cho