How To Change Variable In My Intergal Equation To Number From Input

Hi all sorry for my bad english i really need help here :(

I have a simple yet so frustating problem So here my story

first i make variable x with syms

I have an equation from calculation value (which from my input) just call my input is q and w and my equation is x1 example i make x1 = w*x then i intergate x1 to make new equation; x2 = int (x1,x)

right now from equation x2, i want to change the variable x to my input q so example x2 = x^2 + 0.5x and the q = 10 so i should get x2 = 105 is there anyway to make my x2 like this?

please help and once again sorry for my bad english