Answer:
Step-by-step explanation:
FOIL method
First
a*c=ac
Outer
a*d=ad
Inner
b*c=bc
Last
b*d=bd
then add
ac+ad+bc+bd=0
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Answers & Comments
Answer:
Step-by-step explanation:
FOIL method
First
a*c=ac
Outer
a*d=ad
Inner
b*c=bc
Last
b*d=bd
then add
ac+ad+bc+bd=0