Question

1. Recall
a. (a) (-b)
b. (-ab)(-c)
c. (4b)(-3d)
d. (a+b-c)^2
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Answer 1

Answer:

a. -ab

b. abc

c. -12bd

d. (a+b)^2+c^2-2ac-2bc

= a^2+b^2+c^2+2ab-2ac-2bc.

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