Which of these *is* a polynomial? $$y=\dfrac{x}{x^2-4}$$ $$y=\sqrt{x^2+4}$$ $$y=3x^2+4x-7$$

Flashcard 12 - Advanced Basics Flashcard Set for the Math Basics

\[y=3x^2+4x-7\]

A polynomial is a sum or difference of monomial terms.

All Flashcard Sets for the Math Basics are now available as downloadable PDFs