Các câu hỏi tương tự
neu m,n la cac so tu nhien thoa man
4m^2 + m=5n^2+n thi m - n va 5m+5n+1 deu la so chinh phuong
tim so tu nhien N co 2 chu so,biet rang 2N+1 va 3N+1 la cac so chinh phuong
1 . tong binh phuong tat ca cac nghiem cua phuong trinh : x4(x-1)+(x-1)x3=0
2.neu da thuc 2m3-m+n co 2 nhan tu la : x+2 va x-1 thi gia tri cua 2m+3n la
3.tong x; y thoa man (x-2015)2+(y-2014)4>hoac bang 0 la ?
tim x,y de thoa man
a) n^2-4xy+7 la so chinh phuong
b) n^2-3n-1 la so chinh phuong
biet x,y,m,n la cac so nguyen thoa man: x+y=m+n. chung minh S=x^2+y^2+m^2+n^2 luon =bang cac binh phuong cua 3 so nguyen
Cmr n^2+n+1 khòg la so chinh phuong vs n la so tu nhien lon hon 0
tim n la so tu nhien sao cho n2+2002 la 1 so chinh phuong
chung minh A = n*(n+1)*(n+2)*(n+3)khong la so chinh phuong voi moi n la so tu nhien
cho so nguyen to p va cac so duong x,y thoa man 4x^2-3xy-y^2-p(3x+2y)=2p^2 CHUNG MINH RANG 5x-1 la so chinh phuong