1 so chinh phuong co chu so tan cung khong the la chu so nao
A.0
B.6
C.9
D.8
Cac ban co phai la so 0 phai khong?
ket qua cua phep tinh 3.7.5.9.11+3 co phai la so chinh phuong khong
cho a bang 2^2+2^3+...+2^20 chung minh rang A+4 khong phai la so chinh phuong
Cho A = 2^2 + 2^3 + 2 ^4 + ..... + 2^10. CMR : A + 4 khong phai la so chinh phuong.
tong cua n so tu nhien le dau tien co phai la mot so chinh phuong khong ?Vi sao ?
Tong cua n so tu nhien le dau tien co phai la mot so chinh phuong khong?Tại sao?
Chung minh rang: 41^2015+2017^2016+2016^2017+8001^2018 khong phai la so chinh phuong
1+3+5+.......+(2n-1) , n thoc so tu nhien khac 0 . n co phai la so chinh phuong khong
Tong cua n so thu nhien le dau tien co phai la mot so chinh phuong khong?Tai sao?