\(\frac{5}{\sqrt{2x+1+2}}\).Tim x de x la so nguyen

\(A=\frac{\sqrt{x}+1}{\sqrt{x}-1}.\) Tim x de A la so nguyen

cho A=\(\frac{\sqrt{x}+1}{\sqrt{x}-3}\)(x\(\ge\)0)

tim so nguyen  de A co gia tri la so nguyen

Cho A=\(\frac{\sqrt{x}+1}{\sqrt{x}-5}\)Tim x de A la mot so nguyen

Minh dang can cau tra loi som cam on cac ban

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

cho C=\(\frac{3\left|x\right|+2}{4\left|x\right|-5}\)(x la so nguyen )

a) tim x la so nguyen de C dat GTLN;GTNN

b) tim x la so nguyen de C la so tu nhien

Tim cac so x, y la cac so nguyen thoa man: \(\frac{2}{x+y\sqrt{5}}-\frac{3}{x-y\sqrt{5}}=-9-20\sqrt{5}\)

cho bieu thuc C =\(\left(\frac{x-\sqrt{x}}{\sqrt{x}-1}+1\right):\left(\frac{x+\sqrt{x}}{\sqrt{x}+1}\right)\)

a. tim dieu kien de C co nghia ?

b.rut gon C ?

c. tinh C tai x=\(\frac{4}{9}\)

d. tim x de C= 5

e.tim gia tri x nguyen de C co gia tri nguyen

Cho bthuc: \(A=\frac{1}{2\sqrt{x}-2}-\frac{1}{2\sqrt{x}+2}+\frac{\sqrt{x}}{1-x}\)

a) Rut gon A

b) Tim gia tri cua x de /A/ =\(\frac{1}{2}\)

c) Tim x nguyen de A co gia tri nguyen