Question

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

A
a2 + b2 - c2 + 2ab


B
a2 + 2b2 - c2 + 2ab


C
2a2 + b2 - c2 + 2ab


D
none of these​

Answer 1

Answer:

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

Answer 2

Answer:

the answer is...

a² + b² - c² + 2ab