tim gia tri lon nhat
-x^2-y^2+2xy+xy+2x
tim gia tri lon nhat khi A=3/(2x^2+2x+3)
tim gia tri lon nhat
A=4-x^2+2x
cho x^2+y^2+z^2=3. tim gia tri nho nhat va lon nhat cua P=x+y+2z
tim gia tri lon nhat khi C=2x^2-16x+50/x^2-8x+22
tim gia tri lon nhat cua B=-2x2+6x+4
Tim gia tri nho nhat A=x2-2x
Tim gia tri lon nhat B=-x2+4x-5
Chung minh rang: x4+6x3+11x2+6x chia het cho 24 voi moi x thuoc N
gia tri lon nhat thoa man 3x-7=6-2x
giup giai cau nay voi
tim gia tri lon nhat
x2-2xy+y2+2x-10x+17
minh dang can gap lam.
