so nguyen to x thoa man 576*15:x=540
so cac cap (xy)nguyen thoa man :x>y va x/9=7/y
moi nguoi giup toi voi........cho ket qua thoi nha
1. gia tri x+y+z biet :
lx-5l+ly-4l+lz-4l=0
2.so cac uoc nguyen duong cu 2^6.3^3
3.so cac uoc nguyen duong cua 18
4.so duong thang tao thanh boi 8 biem phan biet doi mot khong thang hang
5.so tu nhien n thoa man 2^n+1:4^2=1024
6.UCLL(12,18,24)
7.so tu nhien n thoa man 2+4+6.......+n=110
8.tim x 576.15:x=540
9.gia tri a+b+c biet
a+b=10,a+c=25,b+c=25
so phan tu cua tap hop A cac so le nho hon 23
câu 1:so du cua tich n(n+4)(n+8) chia cho 3
Câu 2:tổng tất ca cac so nguyen x thoa man (x+6). (x-9)
câu 1:so du cua tich n(n+4)(n+8) chia cho 3
Câu 2:tổng tất ca cac so nguyen x thoa man (x+6). (x-9)
So cac so nguyen x thoa man -2x+3=7
Tim cac so nguyen x thoa man (x-7)(x+3) nho hon 0
tong tat ca cac so nguyen x thoa man:(x+6)(x-9)=0
Tap hop cac so nguyen x thoa man : |7-x|=|x+3| la