1.

Simplify: (a+b+c)2 – (a-b-c

Answer»

Step-by-step explanation:

(a+b+c)^2 – (a-b-c)^2

This equation is of the form

x^2 – y^2= (x+y)(x-y)

If we apply this formula for the equation we GET

(a+b+c)^2 – (a-b-c)^2

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

=(2A)(a+b+c-a+b+c)

=(2a)(2b+2c)

=4AB + 4ac

HOPE IT HELPS....

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