cho a thuoc z. tim so nguyen x, biet
a) a+x=5
b) a-x=2
A = 2/ x-1 .tim dieu kien cua x de A la phan so . tim A khi x = 2 ; x = -3. tim dieu kien cua x de A la so nguyen ( A thuoc Z )
bai 1 tim so nguyen duong nho nhat co 3 chu so , so nguyen a lon nhat co 2 chu so
bai 2: tim x thuoc Z biet
a, / x/ = -5
b, /x/= <7
c, /x/ = 4
d, /x/=0
Tim so nguyen x,y biet
a) (x+5) mu 2 + (2y - 8 ) mu 2 = 0
b)(x + 3).(2y - 1 ) = 5
Biet a thuoc Z , tim so nguyen x :
a + x = 5
Ai nhanh la tick
cho A = 1/15 nhan 225/(8+2) + 3/14 nhan 196/(3x+6) (x thuoc Z; x khac -2 )
a) Rut gon A
b) Tim x thuoc Z de A thuoc Z
c) trong cac gia tri nguyen A tim gia tri lon nhat va gia tri nho nhat
cho a thuoc Z Tìm so nguyen x biet
a+x=5
a-x=2
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
Bai1 a,cho n thuoc N. Chung minh rang 6n+5 va 4n+3 la 2 so nguyen to cung nhau
b, tim so nguyen x sao cho x+2016 la so nguyen duong nho nhat
