Question

Simplify (a+b+c) (a-b-c)​

Answer 1

Answer:

a² - b² - c² - 2bc

Hope it will Help...

Answer 2

Answer:

(a+b+c)(a-b-c)=a(a-b-c)+b(a-b-c)+c(a-b-c)

=a²-ab-ac+ab-b²-bc+ac-bc-c²

=a²-b²-2bc-c²

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