Q. [ + 50 ] - Universityku

Q. [ + 50 ]

Penjelasan dengan langkah-langkah:

$sflimlimits_{xto12} frac{x^2 - 6x - 72}{x^2 - 144}$

$= sflimlimits_{xto12}( frac{x + 6}{x + 12} )$

$= frac{12 + 6}{12 + 12}$

$= frac{18}{12 + 12}$

$= frac{18}{24}$

$= frac{3}{4}$

$sflimlimits_{xto12} frac{x^2 - 6x - 72}{x^2 - 144}$

$sflimlimits_{xto12} frac{(x - 12)(x + 6)}{(x - 12)(x + 12)}$

$sflimlimits_{xto12} frac{ cancel{(x - 12)}(x + 6)}{ cancel{(x - 12)}(x + 12)}$

$sflimlimits_{xto12} frac{(x + 6)}{(x + 12)}$

$sf = frac{(12 + 6)}{(12 + 12)}$

$sf = frac{18}{24}$

$sf = frac{18 div 6}{24 div 6}$

$sf = frac{3}{4}$