cho hai so tu nhien a va b, trong do a la so le. chung minh rang hai so a va a.b+22013 la hai so nguyen to cung nhau
cho a la mot so tu nhien le, b la mot so tu nhien bat ki
chung minh rang : hai so a va a.b + 4 la hai so nguyen to cung nhau
a, Chung minh rang 5m+3 va 3m+2 la 2 so nguyen biet rang 1 so bang 10 ngen to cung nhau voi m la so nguyen to bat ky.
b,Tim 1 bo ba so nguyen to biet rang 1 so bang 10 phan tram tong cua 3 so can tim
Ai lam nhanh nhat minh tick cho
cho a+ b = p la snt . chung to rang a va b la hai so nguyen to cung nhau . minh can gap
cho a la so tu nhien le b la so tu nhien chung minh rang so a va ab + 4 la 2 so nguyen to cung nhau
cho a va b la 2 so nguyen to cung nhau chung minh rang cac so sau cung la 2 so nguyen to cung nhau 1) a va a+b 2) a va a-b
chung to rang neu p=a+b la mot so nguyen to (a;b thuoc N*) thi a va b la hai so nguyen to cung nhau
Cho a la so tu nhien le , b la mot so tu nhien .Chung minh rang cac so a va ab +4 nguyen to cung nhau
Bai1 a,cho n thuoc N. Chung minh rang 6n+5 va 4n+3 la 2 so nguyen to cung nhau
b, tim so nguyen x sao cho x+2016 la so nguyen duong nho nhat
