Example 80

$\;\;\;(7 - u^{8}v^{2})^2$

$=(A - B)^2 \text{, where } A = 7 \text{ and } B = u^{8}v^{2} $

$=A^2 - 2AB + B^2$

$=(7)^2 - 2(7)(u^{8}v^{2}) + (u^{8}v^{2})^2 $

$=49 - 14u^{8}v^{2} +u^{16}v^{4} $