Các câu hỏi tương tự
Tim tat ca cac cap so nguyen x,y sao cho
a) xy-2x-2y=0
b) 20x + 10y =2010
tim cap so nguyen x , y sao cho
20x+10y=2010
tìm tất cả các số nguyên x,y
a) x.y-2x-2y=0
b) 20x+10y=2010
tim cac cap so nguyen to x,y: x.y=2x+2y
Tim cac cap so nguyen x,y
a,x . ( y - 3 ) = -12
b,xy - 3x - y = 0
c,xy + 2x + 2y = -16
tìm ,y
a.xy - 2x -2y=0
b. 20x + 10y =2010
tim cap so nguyen x,y
(2x-1)(2y+1)=-35
Tim cac cap so nguyen x,y biet
a,xy=-5
b,(x+2)(2y-3)=8
c,(x-2)^2+(2x-y)^4=0
d,|x|+|y|=1
e,|2x+1|+|y|=4
f,|x-13|+|2y-8|<hoac= 0
g,|x-5|+|y+2|=2
h,|x+3|+|2y+1|=3
1.a, cho a=3+3^2+3^3+3^4+...+3^90. chung minh rang achia het cho 11 vs 13
b, tim tat ca cac cap so nguyen x,y sao cho x.y-2x+y+1=0
minh dang can gap nhanh len cac ban@gmail.cm