\(A=\frac{\sqrt{x}+1}{\sqrt{x}-3}\)
\(A=\frac{\sqrt{x}-3+4}{\sqrt{x}-3}\)
\(A=1+\frac{4}{\sqrt{x}-3}\)
để \(A\in Z\)thì \(\frac{4}{\sqrt{x}-3}\in Z\)
\(\Leftrightarrow\sqrt{x}-3\inƯ\left(4\right)\)
\(\Leftrightarrow\sqrt{x}-3\in\left\{\pm1;\pm2;\pm4\right\}\)
đến đây xét từng trường hợp rồi đối chiếu điều kiện là xong
goi A la tap hp cac so nguyen duong x sao cho gia tri cua bieu thuc :\(\frac{2\sqrt{x}+3}{\sqrt{x}-1}\) nguyen
Tim so Nguyễn x de N=9/\(\sqrt{x-5}\)co gia tri nguyen
cho P=\(\frac{9}{\sqrt{x-5}}\). tim x thuoc Z de A co gia tri nguyen
TIm x thuoc Z de cac ps sau co gia tri la so nguyen :
D = \(\frac{2x-3}{x-1}\)
TIm x thuoc Z de cac ps sau co gia tri la so nguyen :
D = \(\frac{2x-3}{x-1}\)
\(A=\frac{\sqrt{x}+1}{\sqrt{x}-1}.\) Tim x de A la so nguyen
tim so nguyen n de phan so sau co gia tri la so nguyen
A=\(\frac{6n+5}{2n-1}\)
tim x nguyen de \(\frac{2012\sqrt{x+5}}{1006\sqrt{x+1}}\)la so nguyen
A= \(\frac{\sqrt{x}+1}{\sqrt{x}-3}\)tinh x de a co gia tri nguyen