Các câu hỏi tương tự
Chung minh rang tong 5 so tu nhien lien tiep khong the la so chinh phuong
chung minh rang neu a,b la tong cua2 so chinh phuong thi ab cung la tong cua 2 so chinh phuong
chung to
Xem chi tiết
a, so co tong cac chu so la 2004 khong la so chinh phuong
b, so co tong cac chu so la 2006 khong la so chinh phuong
c, n = 20044+20043+20042+23 khong 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
cho a bang 2^2+2^3+...+2^20 chung minh rang A+4 khong phai 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
Chung minh rang: 41^2015+2017^2016+2016^2017+8001^2018 khong phai la so chinh phuong
chung to rang so A la so chinh phuong biet rang
A = 1+3+5+7+...+(2n-1) voi n € N*
a) cho A = 1 + 3 + 5 + 7 +......+(2n + 1) Voi n thuoc N
chung to rang A la so chinh phuong
b) cho B = 2 +4+6 + 8 + ....+ 2n Voi n thuocN
so B co the la chinh phuong ko