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