Các câu hỏi tương tự
neu a la so gam 200 chu so 1 va B la so gom 100 chu so 2 CMR A-B la so chinh phuong
chung minh rang neu A la so gom 200 chu so 1 va 100 chu so 2 thi A-B la so chinh phuong
cho so tu nhien a gom 100 chu so va 1 so tu nhien b gom 50 chu so 2 chung minh ava b la hai so chinh phuong
CMR : neu a.b = c2 (a,b,c thuoc N*) va UCLN (a,b) =1 thi a va b deu la cac so chinh phuong
tim so co 4 chu so abcd, biet rang abd la so chinh phuong, neu cong them 72 don vi thi duoc mot so chinh phuong
Tim so chinh phuong co 10 chu so neu chia so do cho tong 10 chu so thi duoc thuong la 45509825 va du 14
Cmr cac so la so chinh phuong
\(A=\)111...1555...56
n chu so 1,n-1 chu so 5
tim mot so chinh phuong gom4 chu so abcd = k mu 2 sao cho chuso cuoi la snt so k co tong cac chu so la 1 so chinh phuong
Cho so tu nhien A gom 4030 chu so 1 , so tu nhien B gom 2015 chu so 2 . Chung minh rang A-B la mot so chinh phuong
cac ban giai ra nhe