1) Cho bieu thuc: \(B=\left(\frac{\sqrt{x}}{\sqrt{x}+4}+\frac{4}{\sqrt{x}-4}\right):\frac{x+16}{\sqrt{x}+2}\left(x\ge0,x\ne16\right)\)

a) Cho bieu thuc A= \(\frac{\sqrt{x}+4}{\sqrt{x}+2}\) ; voi cac cua bieu thuc A va B da cho, hay tim cac gia tri cua x nguyen de gia tri cua bieu thuc B(A;-1) la so nguyen

voi gia tri nguyen nao cua x thi bieu thuc A=2015-2x/1-x co GTLN

1) Cho bieu thuc A=\(3+\frac{2}{x-1}\). Tinh gia tri cua bieu thuc A khi |2x-3|=1  

2) Rut gon bieu thuc B=\(\frac{x}{x-1}\)-\(\frac{x-5}{x+1}\)-\(\frac{3-x}{1-x^2}\)

3) Tim cac gia tri nguyen cua x de bieu thuc \(\frac{B}{A}\)co gia tri nguyen duong

tinh nhanh gia tri cua bieu thuc voi x,y nhan bat ki gia tri nao:

\(\frac{1}{3}x^2y\left(3xy\right)^2y^4+\frac{1}{2}x\left(-2xy\right)^3y^4+x^4y^7+18\)

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

1.cho bieu thuc A=\(\left(\frac{2}{x-2}+\frac{1}{x+2}\right):\frac{1}{x+2}\)

a.rút gọn bieu thuc A

b.tinh gia tri cua A tại x,biet x=1

2.tim x nguyen de gia tri cua bieu thuc A nguyen

a.\(A=\frac{3}{x+2}\)

b.\(A=\frac{x+3}{x-2}\)

cho bieu thuc A = 2012 / 9 - x . Voi gia tri nguyen cua x thi A co gia tri lon nhat ?  Tim tri lon nhat do .

voi gia tri nao cua bien thi bieu thuc sau co gia tri nho nhat,tim gia tri do

\(\left(x-2013\right)^2+\left(y-2014\right)^2-2015\)

rut gon \(y=\frac{2x+2}{\sqrt{x}}+\frac{x\sqrt{x}-1}{x-\sqrt{x}}-\frac{x^2+\sqrt{x}}{x\sqrt{x}+x}\)

cmr voi moi gia tri cua x de Y co nghia thi bieu thuc \(\frac{7}{y}\)chi nhan moi gia tri nguyen