Question

Giải phương trình:60/x+2 + 48/x-2 =6

Answer 1

<=> 60/x+48/x=6-2+2
<=> 60/x+48/x=6
<=> 108/x=6
<=> x=108:6
<=> x=18

 

 

Answer 2

\(\dfrac{60}{x+2}+\dfrac{48}{x-2}=6\)

\(\Leftrightarrow\dfrac{10}{x+2}+\dfrac{8}{x-2}=1\)

=>10x-20+8x+16=x^2-4

=>x^2-4=18x-4

=>x^2=18x

=>x=0 hoặc x=18