Here
2an-an=an
then (an-6)(an+8)
=asqnsq+8an-6an+48
=asqnsq+2an+48answer
sq is square and first We should add or subtract like terms
$200, $250, $300, $350, $400, $450
$250, $300, $350, $400, $450
$0, $200, $250, $300, $350, $400, $450
<span>$50, $200, $450</span>