\(\frac{2x+6}{\left(x+3\right)\left(x-2\right)}=\frac{2\left(x+3\right)}{\left(x+3\right)\left(x-2\right)}=\frac{2}{x-2}\)
Ta gian cho giá trị A=0
Suy ra : \(\frac{2}{x-2}=0\)
\(\frac{2}{x}=2\)
\(\Rightarrow x=-7\)
A=\(\frac{2x+6}{\left(x+3\right)\left(x-2\right)}\)=0
=>2x+6=0
=>2(x+3)=0
=>x+3=0
=>x=-3