Các câu hỏi tương tự
cho xyz la cac so thuc thoa man 2x=3y=5z va /x-2y/=5 tinh gia tri lon nhat cua 3x-2z
Cho x+y-2=0.tinh gia tri cua da thuc :M=x^3+×^2y-xy-y^2×3y+x-1
tinh gia tri cua cac da thuc sau biet x+y-2=0.M=x^4+2x^3y-2x^3+x^2y^2-2x^2y-x(x+y)+2x+3
Cho so nguyen to n co 2 chu so hang chuc la x, hang don vi la y. Biet M=n/x+y. Tim n de M=2. Tim n de M dat gia tri nho nhat
Tim gia tri nho nhat cua bieu thuc sau:
A = x^2+xy+y^2-3x+3y
Tìm cacs gia tri cua x,y,z de A dat gia tri nho nhat
A=/7x-5y/+/3z-3x/+/xy+yz+xz-2000/
cho da thuc P = (-2/3x^3y^2)(1/2x^2y^5) a) thu gon da thuc P roi xac dinh he so va phan bien cua don thuc ?
b) tinh gia tri cua P tai x = -1 , y =1
Cho M :x-2/x+3
a, Tim x € Z de M co gia tri nguyen
b, Tim x € Z de M la gia tri nho nhat . Tim gia tri nho nhat do
tim gia tri lon nhat
h=(3x-2y) ^2 -(4y-6x) ^2 |xy-24|