Simplify : `(a+b+c)^2 - (a-b+c)^2`

Simplify : (a) (a+b+c)(a-b-c)

Simplify : (a+b+c)^(2) (ii) (a+b+c)^(2)-(a-b-c)^(2)

Simplify: a(b-c)-b(c-a)-c(a-b)

Simplify: a(b-c)+b(c-a)+c(a-b)

Simplify: (a+b+c)(a^(2)+b^(2)+c^(2)-ab-bc-ca)

Simplify: (a^(2)-(b-c)^(2))/((a+c)^(2)-b^(2))+(b^(2)-(a-c)^(2))/((a+b)^(2)-c^(2))+(c^(2)-(a-b)^(2))/((b+c)^(2)-a^(2))

Simplify (a+b)(2a-3b+c)-(2a-3b)c

Simplify : ((2^(a))/(2^(b)))^(a+b).((2^(b))/(2^(c)))^(b+c).((2^(c))/(2^(a)))^(c+a)