Standard form: $2a^3-5a^2-2a+5$ Degree = 3 Number of terms = 4 Thus, the polynomial is a cubic polynomial.
Work Step by Step
Multiply the binomials by distributing each term of the first factor to the other factor: $2a(a^2-1)-5(a^2-1) \\=2a^3-2a-5a^2+5 \\=2a^3-5a^2-2a+5$. The polynomial has degree 3 and has four terms. Thus, the polynomial is a cubic polynomial.