Practice Quiz Apology

My apologies -- as I ended up not being home this evening and not being able to access internet until now.  I hope you redid the problems from the factoring packet -- that is the best practice, and used the answer key below to help you!!
My apologies again.

Factoring Completely Answer Key

Cool Factoring Videos

Factor Rap -- Created by two math teachers and their students

Factoring Differences of Squares

Factoring Quadratic Polynomial Expressions

Factoring Completely Video

Unit 3 - Test Prep -- extra practice problems Answer Key!

p. 148 Oral Exercises

#2 -st² and 3t²s; 2s²t and –s²t

Like terms are terms that have the same variable(s) and exponent(s). 

#5 degree 8 (Add the exponents of all the variables.)

#7 degree 3

#9 degree 6

#12 -4x³ – 2x² + 6x – 5; cubic four-term polynomial

#14 p²q³ – 3pq⁴; degree 5 binomial

#16 -s²t² + 2s²t + 3st²; quartic trinomial

p. 149 Written Exercises

#43 2a³ + 2ab² + b³

pp. 153-154 Written Exercises

#20 -3r³s⁶

#34 0

To multiply monomials, multiply the coefficients, keep the same base, and add the exponents.

p. 157 Written Exercises

#16 16t¹⁶

#28 10x⁹y⁷

#48 8x⁸ⁿ

pp. 159-160 Written Exercises

#17 2x⁴ – 3x³y – x²y²

#40 Area = 2x² + 5x units²

pp. 162-163 Written Exercises

#16 10k² – 11k – 6

#34 -2a³ – 5a² + 11a - 4

p. 177 Self-Test 3

#3 The dimensions of the pond are 17 ft by 10 ft.

Unit 3 Test Prep Problems

Below are some problems from your textbook that you can work to prepare for the Unit 3 test. Answers will be posted on this blog at 7:00 PM on Thursday, November 2. Send your questions as a comment to the post with the answer key, not as an e-mail. THIS PROBLEM SET IS NOT A SUBSTITUTE FOR THE STUDY GUIDE. THERE ARE ITEMS ON THE STUDY GUIDE THAT ARE NOT COVERED HERE.

p. 148 Oral Exercises

#2 – The textbook uses “similar monomials” to mean like terms.

In addition to naming the like terms, tell how you know which terms are like terms (go back to the definition of like terms).

#5, 7, 9 – Just state the degree of the entire monomial.

#12, 14, 16 – Rewrite in standard form, if necessary. Then classify each polynomial by degree and number of terms using vocabulary, not numbers.

p. 149 Written Exercises

#43 – Be sure your answer is in standard form.

pp. 153-154 Written Exercises

#20, 34

Also, state the rule for multiplying monomials.

p. 157 Written Exercises

#16, 28, 48

Yes, #48 is a little tougher, but just apply the same Multiplication Laws of Exponents that you used for the first two exercises in this set.

pp. 159-160 Written Exercises

#17, 40

pp. 162-163 Written Exercises

#16, 34 – Again, write answers in standard form

p. 177 Self-Test 3

#3 – Show all four steps as instructed.