tim moi so nguyen to thoa man x^2-2y^2=1
tim moi so nguyen to thoa man x^2-2y^2=1
tim cap so nguyen (x, y)thoa man 2y2= 5-/x-1/
tim moi so ngto thoa man: x^2 -2y^2=1
Tim moi so nguyen thoa man:x2+2y2=1
Bai 1
( 1/2 - 1 ) . (1/3- 1) . ( 1/4 - 1 )....( 1/2012 - 1 ) . ( 1/2013 - 1)
Bai 2 Tim tap hop cac so nguyen x thoa man cac dieu kien sau
a) 7/2 . 5/12 - 1 < x < 23/3 ÷ 7/3 + 5/7
b) -2240/6 x + 3 ÷ 5/3 la so nguyen
tim cac so nguyen x, y thoa man x>y>1 va 2x + 2y + 1 chia het cho xy
Tim 3 so nguyen to lien tiep x,y,z (x<y<z) thoa man A = x^2 + y^2 + z^2 la so nguyen to
a,Tim GTNN cua bieu thuc :
P= |x-2010|+|2011-x|
b,tim cac so nguyen to x,y thoa man :
x^2-2y^2=1