Question

Given the expression 5a2b – 13ab + 7a3 – 4b, do the following as instructed below: Write the polynomial in descending order. Classify the polynomial by the number of terms. State the degree of the polynomial.

Answer 1

Do you mean 5 a(to the second)b - 13 a b + 7 a(to the third) - 4 b
7a^3 - 5a^2b -13ab - 4b
Polynomial (more than 3 terms) 
Degree is 9, add all exponents of variables together

Answer 2

Answer: Classification: polynomial (more than 3 terms)

              Degree: 3

Step-by-step explanation: 5a²b - 12ab + 7a³ - 4b

As the terms are not similar, we cannot sum anything, it has 4 terms, which makes it a polynomial.

For the degree, we need to find the biggest one, which is 3 from a³.