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Example 101
$\;\;\;(4p^{3} + 3q^{3})(4p^{3} - 3q^{3})$
$=(A + B)( A - B) \text{ , where } A = 4p^{3} \text{ and } B = 3q^{3} $
$=A^2-B^2$
$=(4p^{3})^2 - (3q^{3})^2 $
$=16p^{6} - 9q^{6} $
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