tim so nguyen p sao cho p^2=1 va p^4+1 cung la so nguyen to. tra loi so nguyen to thoa man la p=

tim số nguyen duong nho nhat thoa man mot phan 2 so do la so chinh phuong,mot phan 3 so do la luy thua bac 3 cua 1 so nguyen, mot phan 5 so do la luy thua bac 5 cua 1 so nguyen

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

tim so nguyen x thoa man -210=-1+-2+-3+...+(-x-1)+-x la

tim so nguyen c thoa man c+1 la uoc so cua 6c-1

a)Tim tat ca cac so nguyen duong x, y , z thoa man: \(\frac{x+y\sqrt{2013}}{y+z\sqrt{2013}}\)la so huu ti, dong thoi x² + y²+ z² la so nguyen to.

b) Tim so tu nhien x, y thoa man: x(1+x+x²) = y(y-1).

cho a,b,c la cac so nguyen thoa man cac dieu kien: a+b-c=15; a-b+c=21; -a+b+c=-2015. Tim cac so nguyen do.

tim tat ca cac so nguyen to a,b,c co the bang nhau thoa man abc<ab+bc+ca chung minh rang neu b la so nguyen to >3 thi (b+1)(b-1) chia het cho 24

1.Tim cac chu so x va y de so 1x8y2 chia het cho 36

2.tim cac gia tri nguyen cua n de phan so A=3.n+2/n-1 co gia tri la so nguyen

3.tim cac chu so x y thoa man 

(x-2)^2.(x-3)^2=4

4.tim so tu nhien x biet 

(x-5):3/100=20.x/100 +5