In this instance it is in fact easy to factor our quartic by treating it as a biquadratic equation; but finding such factorings of a higher degree polynomial can be very difficult.
2.
The leading idea of Baker's work is the solution of biquadratic equations ( and those of a lower degree ) by a geometrical construction, a parabola intersected by a circle.
परिभाषा
an equation of the fourth degree पर्याय: biquadratic,