Answer
(d-2)(d+32)
Work Step by Step
You are given $d^{2}$+30d-64. Factor it out:
$d^{2}$+32d-2d-64 -break out the b value-
($d^{2}$+32d)+(-2d-64) -group the first two and last two terms-
d(d+32)-2(d+32) -Find the GCF of each grouping-
(d-2)(d+32) -factor out the common term-
=(d+32)(d-2)
