## Intermediate Algebra (6th Edition)

$x^{2}$ - 6x + 3
$x^{2}$ - 5x + 7 - (x + 4) = $x^{2}$ - 5x + 7 - x - 4 = $x^{2}$ + (-5x - x) + (7 - 4) = $x^{2}$ - 6x + 3