A projectile is launched from level ground with an initial speed \(v_0\) at an angle \(\theta\) above the horizontal. During its motion, the projectile reaches a height \(h\) above the ground at two different horizontal positions, \(x = d_1\) and \(x = d_2\), as measured from the launch point. Which of the following expressions represents the total horizontal range \(R\) of the projectile in terms of \(d_1\) and \(d_2\)?