The following rational equation has denominators that contain variables. For this equation, a. Write the value or values of the variable that make a denominator zero. These are the restrictions on the variable, b. Keeping the restrictions in mind, solve the equation.1/ x-4 - 3/x+2 = 6/x²-2x-8*****a. What is/are the value or values of the variable that make(s) the denominators zero?X=(Simplify your answer. Use a comma to separate answers as needed.)