Các câu hỏi tương tự
tim x,y thuoc N, biet x.y+2.x+y-13=0
tim x ,y thuoc N biet x.y + 2.x +y-13=0
tim x, y thuoc Z biet x+y -x.y = 7
tim so phan tu trong cac tap hop sau
a)A={x thuoc N/x+8=14,5}
B={y thuoc N/y.3<72}
C={z thuoc N/1+2z>100}
D la tap hop cac so tu nhien le nho hon 10
Tim x thuoc N
a, x.y=11
b,x.y=12
c,(x+1).(y+3)=6
d, 1+2+3+....+x=55
Tim x, y thuoc Z, biet:
x.y+x+y+1=-3
Tim x , y thuoc N a)x.y=24 va x<y b) (x+3).(y-2) =45 c) (2x+1) . (y-7)=150 d)2x-xy-3y=1
tim x, y thuoc Z biet : x.y - 2.x - 3.y = 5 ( trinh bay nha )
Cho | x | lon hon hoac bang 3 ; | y | = 5 , x; y thuoc tap hop Z . tim x ; y