For this case we must find an expression equivalent to:
[tex]\frac {\frac {3x} {x + 1}} {x + 1}[/tex]
Applying double C we have:
[tex]\frac {3x} {(x + 1) (x + 1)} =\\\frac {3x} {(x + 1) ^ 2}[/tex]
Finally, an equivalent expression is:
[tex]\frac {3x} {(x + 1) ^ 2}[/tex]
Answer:
[tex]\frac {3x} {(x + 1) ^ 2}[/tex]
