tim thuong trong phep chia so huu ti am nho nhat viet boi ba chu so 1 cho so huu ti am lon nhat viet boi ba chu so 1
giai ho minh nha ai giai dc minh like
mot so tu nhien co 5 chu so. biet rang viet them 1 vao ben phai va them chu so1 vao ben trai thi ta duoc so moi lon gap 3 lan so ban dau. tim so ban dau
cho tam giac abc vuong tai a co so do do dai canh huyen bc la so huu ti .ve phia ngoai tam giac dung hinh chu nhat bcde sao cho cd = bc/\(\sqrt{2}\) . goi m va n theo thu tu la giao diem cua ad , ae voi bc . chung minh \(\sqrt{bm^2+cn^2}\) la so huu ti
1so tu nhien co 2 chu so.chu so hang don vi gap 2 lan.neu them chu so1 vao giua 2 so ay thi duoc 1 so moi hon so ban dau 370.tim so ban dau
cho m la so nguyen duong nho hon 30.tim m de da thuc x2+mx+72 viet thanh tich 2 da thuc bac nhat voi he so nguyen
Ba so ti le voi 5,6,7. Neu gap doi so thu nhat, gap 3 so thu 2 thi tonng 3 so luc bay gio la 70. Tim 3 so do?
Tim một so co 3 chu so sao cho ti so giua so do va tong các chu so cua no co gia tri nho nhất
Cho a,b la cac so huu ti thoa man a2n+1 + b2n+1 =2anbn
Chung minh 1-ab la binh phuong cua 1 so huu ti
mot so tu nhien co 2 chu so voi tong cac chu so bang 14. neu viet nguoc lai thi duoc 1 so tu nhien co 2 chu so ,lon hon so ban dau 18 don vi . tim so tu nhien ban dau