1.

÷ (a+b+c)​

Answer»

ANSWER:

(a+b-c)

Step-by-step EXPLANATION:

{a}^{2} + { b}^{2} - {c}^{2} + 2ab

= {a}^{2} + 2ab + {b}^{2} - {c}^{2}

= ( {a + b)}^{2} - {c}^{2}

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

So,as PER the QUESTION,

\frac{(a + b + c)(a + b - c)}{(a + b + c )}

=(a+b-c)


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