Answer:
\(d^2 -16\)
Step-by-step explanation:
(-d + 4)(-d - 4)
Apply FOIL method to multiply it
First multiply -d inside the second parenthesis -d-4
\(-d * -d = d^2\)
\(-d *(-4)= 4d\)
\(4 * (-d) = -4d\)
\(4 * (-4)= -16\)
Now combine all the terms
\(d^2 +4d -4d -16\)
\(d^2 -16\)
