tim gia tri nguyên duong cua x và y sao cho 1/x+1/y=1/5
tìm so nguyen a de a^2+a+3/a+1
cho bieu thucA=\(\frac{8-x}{x-3}\)
tim gia tri cua x de A co gia tri bang gia tri bieu thuc M=x+1
cho bieu thuc A = 2006 -x / 6-x tim gia tri nguyen cua x de A dat gia tri lon nhat. Tim gia tri lon nhat do
Tim gia tri cua x de A = -1 :
A = &x-5 /&x+3 ( & nghia la can bac 2 )
Cho bieu thuc \(A=\frac{5-X}{X-2}\) .Tim gia tri nguyen cua x de
a) A co gia tri nguyen .
b) A co gia tri nho nhat .
tim cac gia tri cua x de
a)1/x_1>2
b)F=x^2_1/x^2 co gia tri am
bai 1:Tim x,y,z \(\varepsilon\)Z ,sao cho :|x-y|+|y-z|+|z-x|+|z-t|+|t-x|=2003
bai 2:Cho bieu thuc:E=\(\frac{5-x}{x-2}\)tim gia tri nguyen cua x de
a) E co gia tri nguyen
b)E co gia tri nho nhat
tim cac gia tri cua x de bieu thuc 3/4*x-1>1/2*x+5
Cho biểu thức A = x^2+3/x-2
a tim dieu kien cua x de gia tri cua bieu thuc khong xac dinh duoc
b. Voi nhung gia tri nao cua x thi bieu thuc A nhan gia tri la so a