Question

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

Answer 1

А-b+c+a-c-a+b+c=ас^2

Answer 2

Expanding the given expression, we get:

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

= a - b + c + a - c - a + b + c

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

= c

Therefore,

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