Need help making a MATLab code that will output the root of the given function and create a plot

A reversible chemical reaction 2A+BC can be characterized by the equilibrium relationship K=40C where the nomenclature cyrepresents the concentration of constituent / Suppose that we define a variable x as representing the number of moles of C that are produced. Conservation of mass can be used to reformulate the equilibrium relationship as K=(c0,2x)2(0x)(cp+x) Where the subscript 0 designates the initial concentration of each constituent. Take K=0,016,ca,0=42,cb0=28, and cCO=4. Determine the value of x graphically