Explain, in one sentence, why…

MATHEMATICS · Subjective · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

Explain, in one sentence, why lim⁡x→−∞(5x4−4x+1)=+∞\displaystyle\lim_{x\to -\infty}(5x^{4}-4x+1)=+\infty.

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