title: Solve expressions and display on webpage
body: <p>I am very confused with a question. Question below</p>
  <p><img src="https://i.stack.imgur.com/spFG3.png" alt="enter image description here" /></p>
  <p>What is the circle and inside plus sign? and what type of expression is this? Is this any kind of Boolean algebra Or logic gates? Can anyone help how to solve it?</p>