Tim so tu nhien n sao cho n2 + 16n + 2011 la so chinh phuong.
Tim so tu nhien n sao cho n2 + 16n + 2011 la so chinh phuong.
chung minh: 3n+63 (n thuoc N ; n khac 0,4) khong la so chinh phuong
tim so tu nhien n sao cho n2 +n +6 la so chinh phuong
Tim tat ca cac so nguyen n (/n/ < 1000) sao cho \(\sqrt{3n^2+2949}\)la mot so chinh phuong chia het cho 3.
tim so tu nhien n de n(n+3) la so chinh phuong
tim n de cac so sau la so chinh phuong 9 + 2n ; 15 + 2n
Tim n \(\in\)N de \(n^2+17\)la so chinh phuong
Tim so tu nhien m,n sao cho:\(m^2+n^2+2mn+m+3n+2\)chinh phuong