**Unit 5.1 - Modelling polynomials**

**what we did in class**

If you paid attention to the name of this unit, you noticed that it has the word "polynomial" in it. So you ask... what is a polynomial? Let's watch the following video:

These are the important concepts we need to be aware of:

Remember to write the polynomial in descending order of exponents

- Remember that the if a term does not have a written number, it means that its number is 1

- Also, a term that has no variable, in reality, has a variable with an exponent of 0 (because anything to the power of 0 is 1!)

- Of a polynomial: It is the highest exponent in the polynomial

- Remember that when the amount of terms is bigger than 3, we call the expression a polynomial!

**POLYNOMIAL:**Is the addition of subtraction of different terms.Remember to write the polynomial in descending order of exponents

**TERM:**A term is made up of number and a variable. The variable is raised to a power. That is, the variable has an exponent.- Remember that the if a term does not have a written number, it means that its number is 1

- Also, a term that has no variable, in reality, has a variable with an exponent of 0 (because anything to the power of 0 is 1!)

**DEGREE:**Of a term - Is the variable's exponent- Of a polynomial: It is the highest exponent in the polynomial

**NUMERICAL COEFFICIENTS:**Are the numbers which multiply the variable in a term.**CONSTANT:**It is the term in a polynomial that has no variable. It is called so because it does not change.**MONOMIAL:**Has 1 term.**BINOMIAL:**Has 2 terms.**TRINOMIAL:**Has 3 terms.- Remember that when the amount of terms is bigger than 3, we call the expression a polynomial!

Try this website to practice the modelling of polynomials using algebra tiles:

To check your understanding of all the concepts presented in this unit, do the following online assessment:

**homework**

Page 214: Exercises 11, 12

Page 215: # 14, 15, 16

Page 215: # 14, 15, 16