tong (hieu) sau co la so chinh phuong khong
3.5.7.9.11+3; 2.3.4.5.6-3
so 144 co phai la so chinh phuong hay ko, cac so chinh phuong co chu so tan cung la gi.Cam on!
ket qua cua phep tinh 3.7.5.9.11+3 co phai la so chinh phuong khong
1+3+5+.......+(2n-1) , n thoc so tu nhien khac 0 . n co phai la so chinh phuong khong
cho S=1^2+2^2+3^2+...+56^2. S co phai la so chinh phuong khong
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
3n +1 co phai la so chinh phuong ko
Cac Gia Tri Sau Co Phai So Chinh Phuong Khong
A=2+2^2+2^3+...+2^197
B=x^2012+(x+1)^2
B2
Tim n
n^2×2178 la so chinh phuong
Cho tong S=1+2+2^2+2^3+...+2^2015.Hoi S+18 co phai la mon so chinh phuong ko,vi sao