tim 3 so nguye biet boi chung nho nhat cua chung la 1260;ti so cua so thu 1 va so thu 2 la 3:5,ti so cua so thu 3 va so thu 1 la 4:7
3 dg cao trong tam gic ABC lan luot la 4,12,x biet x la 1 stn . tim x biet ( moi canh cua tam giac nho hon tong 2 canh kia va nho hon hieu 2 canh do
cho 2 diem co dinh A va B nam cung phia voi duong thang d.Hay tim tren d diem C de chu vi cua tam giac ABC nho nhat
do dai ba canh cua tam giac ABC co do dai banh 4;12;x biet x la mot so tu nhien . tim x ( cho biet moi canh cua tam giac nho hon tong hai canh va lon hon hieu cua chung)
Tim gia trin nho nhat cua x+y+z biet
1/x+1/y+1/z=7/10
biet cac canh cua 1 tam giac ti le vs 3;5;6 va hieu do dai canh lon nhat va do dai canh nho nhat la 9cm. Tinh chu vi tam giac do
tim so lon nhat va nho nhat co 12 chu so khac nhau
Tim so co 3 chu so abc biet a:b:c=1:3:2 va abc chia het cho 18
(Chu y abc co gach ngang o phia tren)
Mk biet qua nhung ko biet cach lam cac trinh bay chi tiet nha
tim gia tri nho nhat cua bieu thuc \(A=\left|1-2x\right|-2009\)
tim 2 so x,y biet \(\frac{x}{y}=\frac{2}{5}\)va x+y=-21
so sanh \(2^{225}vs3^{150}\)