At constant temperature, the equilibrium constant `K_(p)` for by `K_(p)=(4x^(2)p)/((1-x^(2)))`, where `p=` pressure `x=` extent of decomposition. Which one of the following statement is true?

At constant temperature, the equilibrium constant (K_(p)) for the decomposition reaction N_(2)O_(4) hArr 2NO_(2) is expressed by K_(p)=4x^(2)p//(1-x^(2)) , where p=pressure x= extent of decomposition. Which of the following statements is true?

At constant temperature, the equilibrium constant (K_(p)) for the decomopsition reaction N_(2)O_(4)hArr2NO_(2) is expressed by K_(p) = ((4x^(2)P))/((1-x^(2)) , where P = pressure, x = extent of decomposition. Which one of the following statement is true ?