Example 109

$\;\;\;(2k^{6}l^{4} + 1)(2k^{6}l^{4} - 1)$

$=(A + B)( A - B) \text{ , where } A = 2k^{6}l^{4} \text{ and } B = 1 $

$=A^2-B^2$

$=(2k^{6}l^{4})^2 - (1)^2 $

$=4k^{12}l^{8} - 1 $