(-b-c-a)×(-c-a-b)=?
Answers
Answered by
1
Answer:
a2+2ab+2ac+b2+2bc+c2
Step-by-step explanation:
(−b−c−a)(−c−a−b)
=(−b+−c+−a)(−c+−a+−b)
=(−b)(−c)+(−b)(−a)+(−b)(−b)+(−c)(−c)+(−c)(−a)+(−c)(−b)+(−a)(−c)+(−a)(−a)+(−a)(−b)
=bc+ab+b2+c2+ac+bc+ac+a2+ab
==a2+2ab+2ac+b2+2bc+c2
Answered by
0
Answer:
ab+bc=hd3oelshsajqpajuwnoawnjwisne
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