Question

(a+b+c)^2-(a-b-c)^2=?
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Answer 1

Answer:

heya buddy!!! here's the solution

(a+b+c)^2 -(a-b-c)^2

= a^2 + b^2 + c^2 +2ab +2bc +2ac -(a^2 + b^2 + c^2 +2ab +2bc +2ac)

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

= 0

hope it helps :)