Question

(a+b+c)^2 =???
also,
(a+b-c)^2=???​

Answer 1

Answer:

Here is the answer!! hope you will understand.

Answer 2

Answer:

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