Program template - scroller example

[compsystems]

Hi, I want to show an algebraic expression when given a click for exmaple

Hi, I want to show an linear algebraic expression when given a click

as I can do this?

click(x,y)
BEGIN
print(-(x+y)*5!+abs(-4)+cos(45)+ sin(π/3+π)+Σ(j,j,1,3)+√(−2)+4/3-logb(1,10);
END;