chung to rang hai so 3n+4 va n+1 la hai so nguyen to cung nhau voi n la so tu nhien khac 0
chung minh rang : n+1 va 3n+4 (n thuoc N) la hai so nguyen to cung nhau
chung minh rang 2n+3 va 3n+5 la hai so nguyen to cung nhau (n thuoc N*)
chung to rang (3n+7 )va (n+2) la hai so nguyen to cung nhau
Giup minh nhe
A 2 so 3n + 4 va n + 1n (n) la 2 so nguyen to cung nhau
B hai so 2n + 5 va 3n + ưcln la hai so nguyen to cung nhau
ai giup minh voi
chung to rang 2 so n+1 va 3n+1{n thuoc N} la 2 so nguyen to cung nhau
minh dang can gap...................''''
chung to rang hai so n + 1 va 2n + 3 la hai so nguyen to cung nhau
Giúp mình bài này :
Chung minh rang 2 so 2n+3 va 3n+4 voi n thuoc N la 2 so nguyen to cung nhau
chung to 2 so sau la 2 so nguyen to cung nhau
a,2n+3 va n+2
b,3n+1va 2n+1
c,n+10 va n+11
