a)Trên đường phân giác ngoài tại đỉnh C. Lấy M khác C. CMR AC+CB<AM+BM
b)cho tam giác ABC với AC>AB, lấy Ax,Ay lần lượt là đường phân giác trong, phân giác ngoài của góc A. Trên Ax lấy P khác A, trên Ay lấy Q khác A. CMR PC-PB<AC-AB
1 Low fatty acid levels cause a higher risk of developing Alzheimer's disease and memory loss
2 The consumption of blueberries and tomatoes can delay short-term memory loss or Alzheimer's
3 Just a handful of pumpkin seeds a day provides you with your recommended daily amount of zinc
4 A good...
1.I'm very fond of Jane but i (not see).......much of her lately
2.she has already telephoned the people who (come)......tomorrow
3.we have been very busy while they (be).....very late
4.don;t call me in the afternoon. I usually (be).....away in the afternoon
cho pt (m là tham số)
a) CM rằng pt có nghiệm phân biệt với mọi m
b)tìm giá trị lớn nhất của biểu thức
c)tìm các giá trị của m sao cho hai nghiệm của pt đều là số nguyên
contamination of water from any external source that makes it (1).......to life is known as water pollution (2)......the fast industrial development and mordem civilization the problem of water pollution is (3)..... day by day. The (4)......sources of water pollution are dometic wastes...
1) in order to excellent physical condition astronauts must have ....... training before their space trip
A so many B a lot of C no D not
2) people in this remote village have ..... contact with the outside world
A little B a few C...