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Simplify: (a+b+c)^2-(a-b-c)^2...

Simplify: `(a+b+c)^2-(a-b-c)^2`

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To simplify the expression \((a+b+c)^2 - (a-b-c)^2\), we can follow these steps: ### Step 1: Expand both squares using the algebraic identity We will use the identity \((x+y+z)^2 = x^2 + y^2 + z^2 + 2xy + 2yz + 2zx\). 1. **Expand \((a+b+c)^2\)**: \[ (a+b+c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ac ...
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