Question

simplify (a+b+c)(a+b-c)​

Answer 1

Answer:

Given :

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

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

${a}^{2} + ab - ac + ab + {b}^{2} - bc + ca + bc - {c}^{2}$

${a}^{2} + </em><em>2</em><em>ab + {b}^{2} + {c}^{2}$

Thanks

Answer 2

Answer = a^2 + 2ab + b^2 - c^2