cho 2x+y=6 tim gia tri lon nhat K=xy
giup giai cau nay voi
tim gia tri lon nhat
x2-2xy+y2+2x-10x+17
minh dang can gap lam.
tim gia tri nho nhat va lon nhat cua A=x+y+1 biet x^2 +2xy +7(x+y)+2y^2+10
ai giup minh vs mai nop roi Thank thank ^-^<3
B=-x^2+2xy-4y^2+2x+10y-8 co gia tri lon nhat
cho các số thực x,y thỏa mãn x2+y2+5x=2xy+2.Tim gia tri lon nhat cua bieu thuc B=3x+2y
XIN TRAN THANH CAM ON.
tim gia tri lon nhat
A=4-x^2+2x
x2 +3y2 -2xy-2x+y+9 tim gia tri nho nhat
tim gia tri lon nhat khi C=2x^2-16x+50/x^2-8x+22
D= x^2 + 4y^2 - 2xy + 5x + 5y + 1/2
E= 1/2 × x^2 + 3y^2 + xy - 1/2 × x + 5/2 × y - 1/1/4
Tim gia tri nho nhat
