この複雑な数学問題を解く際には考慮すべき変数がたくさんあります

Meaning: there are a whole lot of variables to consider when solving this complex mathematical problem

この: this, these
複雑: complex, intricate, complexity, complicate, complicated, complication, involved
な: a, the, na, nan, nai
数学: math, mathematical, mathematics, arithmetic, maths
問題: problem, issue, matter, question, trouble
を: o, the, to, wo
解く: solve, to solve, to unravel, answer, unwind, untie
際: when, side, opportunity, edge, border, tip, occasion, verge, brink, boundary
に: in, to, on, at, into, upon
は: a, the, is, am, are, will
考慮: consider, consideration, take into account, contemplation, accounted, reflection
す: s, the, be, su
べし: should, must, bei
変数: variable, parameter, unknown quantity
が: is, there, but, ga, will, however
たくさん: lot, a lot, many, much, hearty
ある: a, is, an, be, there is, to be, locate
ます: will, to be, i will, to make, to do, to have