Question

tim x sao cho gia tri cua bieu thuc : 2x-1/x+5 lon hon 2

 

 

Answer 1

\(\frac{2x-1}{x+5}>2\Leftrightarrow\frac{2x-1}{x+5}>\frac{2\left(x+5\right)}{x+5}\)

\(\Leftrightarrow\frac{2x-1}{x+5}>\frac{2x+10}{x+5}\)

\(\Leftrightarrow2x-1>2x+10\)

_{\(\Leftrightarrow0x>11\)(vô lý)}

_{Vậy phương trình vô nghiệm}

Answer 2

mik cam on minh da co dap an