x>2 nên |2-x|=x-2
nên có x+x-2=6 nên x=4
x>2 nên |2-x|=x-2
nên có x+x-2=6 nên x=4
bai 6 hay chung to
a] neu a+b=c thi a=-b+c
b ] neu a-b=c thi a=b+c
bai 7 hay chung to
|a-b|=|b-a|
bai 8 tim x thuocZ biet
a] 6-|x|=2
b ] 6+|x|=2
to dang gap mong cac ban tra loi nhanh minh like phat
1. tim cac cap so nguyen duong (x, y) sao cho:
2 x3 + xy = 11
2. tim cac cap so nguyen duong (x, y, z)sao cho:
x + y + z = x*y*z
3. tim x thuoc z, biet;
|x| = -2003
|x| = |-2003|
minh dang can gap lam. chieu mai phai nop rui
Tim so tu nhien x biet rang 493 chia het cho x va 10<x<100. (Ccac ban tra loi chi tiet luon nha. Minh dang can lam lam. Cam on cac ban nhieu)
tim x biet;
/x+1/2/+/x+1/6/+.......+/x+1/110/=11*x
Cac ban trinh bay that day du nhe
Cac ban lam nhanh ho minh,minh dang can gap
CAC BAN CO BIET NHUNG CAU HOI NAO THUONG CO TRONG BAI KIEM TRA HOC KI 2 KO
NEU BAN NAO KIEM TRA HOC KI ROI NHO TRA LOI MK NHA
MAI MK THI ROI NEN MK DANG CAN GAP
AI TRA LOI NHANH MK SE TICK CHO
LOP 6 NHA MOI NGUOI
tim x biet N thuoc
a) 2-(x+3)=1+2+3+4+5+..............+99
b)(x+1)+(x+2)+(x+3)+(x+4)+...............+(x+100)=5750
giup mk nha cac ban , mk dang can gap lam
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
tim so tu nhien x,biet 148:x du 20;198:x du 12
giup minh nhanh nhe minh dang can gap,ai tra loi day du va dung minh se like
so tu nhien co 10 uoc nguyen duong(to cung dang can gap ai biet mong tra loi nhanh dum nha)