a, co bao nhieu cap so nguyen ( x,y ) thoa man x + y=1
b. co bao nhieu cap so nguyen ( x,y ) thoa man x.2 + y =1
so nguyen x thoa man la
(10-x)2 = 0
cap so nguyen duong x;y thoa man |(x2+2).(y+1)| =9
tong tat ca cac so nguyen x thoa man:(x+6)(x-9)=0
tap hop cac so nguyen x thoa man ( /x-2013/+2014)(xMU 2 +5 ) ( 9-x mu 2 ) =0 la S
TIM SO nguyen x,thoa man:
|x-4|.(1-x)=0
Tong cua cac so nguyen x thoa man
(x+6)(x-9)=0 la
Tong cac so nguyen x thoa man
( x + 6 ) ( x - 9 ) = 0 la
cho x, y , z la cac so nguyen thoa man x . y - x. z + y.z - z^2 +1 =0 chung minh rang x+ y =0