Các câu hỏi tương tự
cho N=1.3.5.......2013 chung minh rang trong ba so tu nhien lien tiep 2N-1;2N;2N+1 khong co so nap la so chinh phuong
Cho N =1x3x5x....x2013 .Chung minh rang trong ba so tu nhien lien tiep 2N-1;2N;2N+1 khong co so nao la so chinh phuong
hay chung minh rang A la so chinh phuong biet rang :A =1^3 + 2^3 + 3^3 + 4^3
Chung minh: 1+5^k+8^n khong la so chinh phuong voi moi k, n thuoc N
M=1+5+5^2+5^3+5^4+...........+5^2013.
em hay chung to:4M+1 la 1 so chinh phuong
1 . chung minh n^2+n+1589 la so chinh phuong
a) cho A = 1+3+5+7+...+(2n+1) Voi n thuoc N
chung to rang A la so chinh phuong
b)B=2+4+6+8+...+2n voi n thuocN
so B co phai la so chinh phuong ko
1. Chung minh tich cua 2 n so tu nhien x la so chinh phuong
cho p la tich cua 2016 so nguyen to dau tien
chung minh rang p-1 va p+1 khong la so chinh phuong