destructor algebraic

a+...(n)...+a+a+...(m)...+a+a = (n+m)·a+a

(-a)+...(n)...+(-a)+(-a)+...(m)...+(-a)+(-a) = (-1)·(n+m)·a+(-a)

a+...(n)...+a+a+...(m)...+a = (-1)·(n+m)·a

a+...(n)...+a+a+...(m)...+a = (-n)·a+(-m)·a

(-a)+...(n)...+(-a)+(-a)+...(m)...+(-a) = (n+m)·a

(-a)+...(n)...+(-a)+(-a)+...(m)...+(-a) = na+ma

a·...(n)...·a·a·...(m)...·a·a = a^{(n+m)}·a

(1/a)·...(n)...·(1/a)·(1/a)·...(m)...·(1/a)·(1/a) = a^{(-1)·(n+m)}·(1/a)

a·...(n)...·a·a·...(m)...·a = a^{(-1)·(n+m)}

a·...(n)...·a·a·...(m)...·a = (1/a^{n})·(1/a^{m})

(1/a)·...(n)...·(1/a)·(1/a)·...(m)...·(1/a) = a^{(n+m)}

(1/a)·...(n)...·(1/a)·(1/a)·...(m)...·(1/a) = a^{n}·a^{m}