tim số nguyen duong nho nhat thoa man mot phan 2 so do la so chinh phuong,mot phan 3 so do la luy thua bac 3 cua 1 so nguyen, mot phan 5 so do la luy thua bac 5 cua 1 so nguyen

tim so nguyen duong n nho nhat sao cho n/2 la binh phuong cua mot so nguyen va n/5 la lap phuong cua 1 so nguyen

giai thich vi sao :(-1)^3=-1.co con so nguyen nao khac ma lap phuong cua no bang chinh no???

cho 1 so chinh phuong co 4 chu so. Biet rang chu so tan cung cua no la so nguyen to, tong cac chu so cua no cung la so chinh phuong va can bac 2 cua no co tong cac chu so cung la so chinh phuong

Giai thich vi sao : (-1)^3=-1. Co con so nguyen nao khac ma lap phuong cua no cung bang chinh no ???

 1. Tim tat ca cac so co 2 chu so sao cho moi so gap 2 lan tich cua no?

2. Tim so nguyen to co 3 chu so biet rang neu viet so do theo thu tu nguoc lai thi ta duc 1 so la lap phuong cua 1 so tu nhien?

3. Tim so tu nhien co 4 chu so biey chu so hang nghin bang chu so hang don vi chu so hang tram bang chu so hang chuc va so do viet duoc duoi dang tich cua 3 so nguyen to lien tiep?

tim 1 so co 2 chu so . biet so do la lap phuong cua so tu nhien va tong cac chu so cua no bang binh phuong cua mot so tu nhien 

giai thich vi sao : (-1)³=1.co con so nguyen nao khac ma lap phuong cua no cung bang chinh no?

giup mik nhe

mot so nguyen duong duoc goi la den dui neu no bang 1 lan tong cac chu so cua no.Tim so den dui nho nhat