Cho cac so duong x, y,z thoa man x+y+z=3. Tim GTLN cua P= can bac hai cua (x+y) + can bac hai cua (y+z) + can bac hai cu(x+z)
Can bậc hai cua (x-1)(x-3)
B,can bac hai cua 4/ x+3
can bac hai cua 21cong6can 6
gia tri lon nhat cua bieu thuc P=can bac hai cua (3+2x-x^2)
can bac hai cua 2x^2-4x+5=x-4
Giáp Phuong Trinh 3(x2+x+1)=(x+can bac hai cua x-1)2
Cho tam giac ABC lay C1 thuoc AB, A1 thuoc BC, B1 thuoc AC. AA1, BB1, CC1 <=1. Chung minh rang dien tich tam giac ABC <=1/can bac hai cua 3
cho tam giac ABC vuong tai A, duong phan giac trong cua goc B va gocC cat nhau tai I. Duong thang di qua C vuong goc voi BI cat AB tai D. cho AB=5, IC= can bac hai cua 6, TINH BC
cho tam giac ABC , goc A cong goc A cong goc B bang 105 do,AB+ can bac hai cua hai nhan AC bang 2 nhan BC .Tinh goc B.