“Jesus said to him (his disciple), I am the way, the truth, and the life. No one comes to the father except through Me.” John 14:6
Math is a universal form of communication. No matter where we are everyone is effected by the weight of gravity, distance the length of travel from one destination to another, measure ingredients to cook, count money or the lack of money, and etc… There are many currencies but there is one way to count them (i.e. 1+2=3), there are UK imperial units, US customary units, Metric system for measuring volume, mass, and distance, but no matter the unit the distance, the volume, and the mass are still the same. Math simply makes since, and without realizing it we look at everything through the lenses of mathematical glasses. Since math is absolute and we are able to come to the same conclusion, in many different ways, in most math equations, the world has tried to adopt that concept to eternal life.
In Jesus statement He infers that there are many other religions promising life ever after, and even in the right religion there are various teachings promising life ever after, but in this one math equation there is only one way to find a solution, Jesus. Jesus is the way. To know the way to eternal life we must know Jesus, and the method of eternal life is Jesus as Lord of your life. Geometry, Trigonometry, and Calculus might be difficult for most but Jesus is the creator of you and math, and He is clear that the answer to all of your problems is Jesus.