tim tat ca cac so nguyen duong x,y sao cho cac so x^2+3.y va y^2+3.x deu la so chinh phuong cua 1 so

Tim tat ca cac so nguyen n (/n/ < 1000) sao cho \(\sqrt{3n^2+2949}\)la mot so chinh phuong chia het cho 3.

neu co so tu nhien n sao cho k =n^2 thi ta noi so k la so chinh phuong tim tat ca cac so ab saocho (ab+ba) la so chinh phuong

tim tat ca cac so nguyen x so cho x^2+x-1 la so chinh phuong

1.tim tat ca cac so nguyen duong n sao cho tat ca cac so n+1,n+5,n+7,n+13,n+17,n+25,n+37 deu la cac so nguyen to

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tim tat ca cac so nguyen to p sao cho 5^p+12^p la so chinh phuong

tim tat ca cac stn n sao cho ( 3ⁿ + 1 ) la 1 so chinh phuong

tim tat ca cac so nguyen duong n sao cho:2^n-1 chia het cho 7

tim so nguyen duong n nho nhat sao cho n/2 la binh phuong cua mot so nguyen va n/5 la lap phuong cua 1 so nguyen