i have problem in uses of inline or syms orders

i want have a variable like x that program does math operators on x and compute the result of this operators for specified x, for example in During the a code i want define x with syms order and obtain f=x^2+x+1, then compute f(1)

[Walter Roberson]

Duplicated by later http://uk.mathworks.com/matlabcentral/answers/216952-i-have-problem-in-uses-of-inline-or-syms-ordes that is solved