I am a student of Dhaka University, faculty of engineering and technology. I have a problem for solving a quadratic equation since it contain square root term, exponential term. Equation is,

b * x + sqrt( c^2 - x^2 ) + d * x^2 * exp(-k*x) - c * exp(-k*x) = a;

If it is possible to solve this equation to find the value of x in terms of a, b, c, d, k please help me.