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Classifying & Adding/Subtracting Polynomials · Easy Worksheet 2

Classifying & Adding/Subtracting Polynomials — Easy Worksheet 2

Grade 9 · MathSheets    Name: ____________________   Date: __________

Write polynomials in standard form (highest power first) and type powers with ^, like 3x^2 - 5x + 1. Name polynomials with words, like quadratic trinomial.

How to solve

The degree is the highest exponent, and the leading coefficient is the number in front of that highest power (1 or -1 if no number is written). By degree: 0 constant, 1 linear, 2 quadratic, 3 cubic, 4 quartic. By number of terms: 1 monomial, 2 binomial, 3 trinomial. To add, combine like terms (same power of x). To subtract, change the sign of every term in the second polynomial, then combine like terms: (5x2 + x) - (2x2 - 3x) = 3x2 + 4x.

Example

Find the degree of the polynomial 4x³ + x² - 5x + 3.

Answer: 3

right so far
1. Find the degree of the polynomial 3x³ + 6x² + 5x + 1.
2. Is 5x² + 5 a monomial, a binomial, or a trinomial?
3. Find the leading coefficient of the polynomial -5x² + 6x + 2.
4. Classify -5x - 1 by its degree: constant, linear, quadratic, or cubic?
5. Add: (6x² + x + 2) + (x² + x + 5)
6. Find the degree of the polynomial 3x³ + 3x².
7. Is -4x³ - 3x a monomial, a binomial, or a trinomial?
8. Subtract: (4x² + 5x + 4) - (6x² + 6x + 3)

/ right