I need to know how to solve this using the quadratic equation. Thanks!

Tutored Practice Problem 15.4.2 Predict and calculate the effect of volume change on an equilibrium system. Consider the equilibrium between SbCl5,SbCl3 and Cl2. SbCl5(g)SbCl3(g)+Cl2(g)K=2.47102at528K The reaction is allowed to reach equilibrium in a 13.4- Llask. At equilibrium, [SbCl5]= 0.196M,[SbCl3]=6.96102M and [Cl2]=6.96102M. (a) The equilibrium mixture is transferred to a 6.70-L flask. In which direction will the reaction proceed to reach equilibrium? (b) Calculate the new equilibrium concentrations that result when the equilibrium mixture is transferred to a 6.70-L flask. [SbCl5]=[SbCl3]=[Cl2]=MMM