Question

the product of ( a + b + c)(a + b -c) is​

Answer 1

Answer:

a²+b²-c²+2ab

Step-by-step explanation:

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Answer 2

$\huge\tt\colorbox{orange}{Solution}$

$(a + b + c)(a + b - c) \\ a(a + b - c) + b(a + b - c) + c(a + b - c) \\ {a}^{2} + ab - ac + ab + {b}^{2} - bc + ac + bc - {c}^{2} \\ {a}^{2} + 2ab + {b}^{2} - {c}^{2} \\ ( {a + b)}^{2} - {c}^{2}$