How do you write a polynomial in standard form, then classify it by degree and number of terms 2x^2 + 3x^3 + 4x^4 + 5x^5?

1 Answer
Sep 8, 2017

standard form: 5x^5+4x^4+3x^3+2x^2
degree: 5
number of terms: 4

Explanation:

A polynomial in standard form has the order of it's terms in decreasing degree, where the degree of a term is the (sum of) the exponent(s) of its variables.

For example:
color(white)("XXX")23p^8 has degree 8
and
color(white)("XXX")7r^2t^3 has degree 2+3=5

In this case, we have the terms:
color(white)("XXX")2x^2 has degree 2
color(white)("XXX")3x^3 has degree 3
color(white)("XXX")4x^4 has degree 4
color(white)("XXX")5x^5 has degree 5
placing them in descending order requires that 5x^5 be the first term and 2x^2 be the last term (with the other 2 terms in the obvious sequence).

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The degree of a polynomial (as opposed to the degree of a single term) is the largest value of any of its terms' degrees.

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A term is an element of a polynomial separated from other elements by either addition or subtraction.