(x+1).(x+5)<0
Ta xet cac truong hop
T/h1: x+1<0 => x<-1
x+5>0 => x>-5
Suy ra -1>x>-5 ; x=-2;-3;-4
T/h2 : x+1>0 => x>-1
x+5<0 => x<-5
Suy ra khong tim duoc x
Tich cho minh nha
tim x la so chia trong phep chia 235 cho x duoc so du la 14.lam on giup toi voi!
cach lam bai : giup minh voi
tim x thuoc Z biet:
a, /x/+/y/=0
b, /x/ + /y/= 1
tinh:1+3+5+7+...+n=36
HAY GIUP TOI VOI LAM ON ! LAM ON HAY TIM CACH NHANH NHAT . CAM ON CAC BAN , TOI DOI ON CAC BAN SUOT DOI
tim x thuoc Z biet 13 - | x + 5 | = 13 lam giup minh nhe cam on
a/[x-2][7-x] > 0 . tim x thuoc Z
b/[x mu 2+13][x mu 2-17] > 0 . tim x thuoc Z
c/[x mu 2-13][x mu 2-17] <0 . tim x thuoc Z
GIUP MINH VOI
NGAY KIA MINH DI BOI DUONG ROI
CAM ON CAC BAN NEU CAC BAB GIUP MINH
Tim x thuoc Z:
a, -8 ⋮ 2x + 1
b, -54 ⋮ 4x - 1
TIM X
a) (7/2+2x)x8/3=16/3
b) [2x+3]=5
c) x-2/4=5+x/3
lam on giup toi nhe ban
Giup minh voi toi nay minh rat can, dung thi minh tich cho, ca cach lam nua nhe.
Tim x,y
a, 2x.y+xy=7
b, xy + 2x - 7y = 14
c, x^3 - 64x = 0
tim x : (x+2)/2019 + (x+3)/2018 + (x+4)/2017 + (x+5)/1008 + (x+2076)/11 = 0
lam nhu the nao giup minh voi
