Các câu hỏi tương tự
cho cac so nguyen duong a,b,c thoa man :(a,b,c)=1;ab=c(a+b).Cm a+b la so chinh phuong
cho a,b,c,d la cac so nguyen duong doi 1 khac nhau thoa man a/a+b + b/b+c + c/c+d + d/d+a =2
CMR abcd la 1 so chinh phuong
30 tháng 6 2023 lúc 7:52
Cho a,b,c nguyen duong sao cho a^2/b, b^2/c, c^2/a la cac so nguyen to. cmr a=b=c
cho so nguyen to p va cac so duong x,y thoa man 4x^2-3xy-y^2-p(3x+2y)=2p^2 CHUNG MINH RANG 5x-1 la so chinh phuong
tim tat ca cac so nguyen duong n sao cho so T=2^n+1 la so chinh phuong
B1. Cho f(1)=1008,f(1)+f(2)+...+f(n)=n^2.f(n) f(n)la ham so duong
tinh f(2015)
B2 Cho cac so nguyen to q,p,r,s sao cho cac so sau deu la so nguyen to p^s+s^q,q^s+s^r,r^s+s^p
tim cac so p,q,r,s
B3 co a,b,c duong a mu 3+bmu3=c^3
so sanh a^2015+b^2015 va c^2015
cho a,b la cac so nguyen thoa man
2018a2-20192=a-b
chung minh gia tri tuyet doi cua a-b la so chinh phuong
Tim so nguyen n de
a, n2 -5
b, n2-4n +3
La cac so chinh phuong
voi moi x y nguyen ta co A=<x+y><x+2y><x+3y><x+4y>+y4la so chinh phuong