Các câu hỏi tương tự
chung minh rang x,y thuoc Z va (5x-2y)x(2x-5y) chia het cho 7 thi tich (5x-2y)x(2x-5y) co nhieu hon 2 uoc chinh phuong
chung minh rang x,y thuoc Z va (5x-2y)x(2x-5y) chia het cho 7 thi tich (5x-2y)x(2x-5y) co nhieu hon 2 uoc chinh phuong
cho A=2*3*5*7*9*......*Pn la tich cua aso nguyen to dau tien. Chung to rang 3 so A-1;A;A+1 KHONG CO SO NAO 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 =3+3^2+.........+3^2004
chung minh A chia het cho 130
A co phai la so chinh phuong hay khong
lam cu the nhe
Chung minh: Co 3 so chinh phuong se luon co 2 so co hieu chia het cho 4
Giup minh nhanh nhe, minh cho 3 tk!
co hay khong so nguyen n de n+6/3 , n+35/3 dong thoi nhan gia tri nguyen
lam cho minh nha minh dang can gap ai lam duoc minh tich cho 5 like
cho hai so nguyen duong co ti so la 7:3 va tich cua chung la 21. Hai so do co tong binh phuong la......
Co cach lam cu the nha!!! minh se cho 1 tick!! mau len nhe!!!! minh dang gap!!!
voi 2 so nguyen to cung nhau neu 2 so nguyen to cung nhau co tich va so ching phuong thi 2 so deu la so chinh phuong