1 / 7

FOIL Day 3

FOIL Day 3. We will continue with presentations from yesterday. Then begin multiplying a polynomial by a binomial. Homework #106 answers. 2. x 2 + 4x + 4 4. t 2 + t – 12 6. z 2 – 4z – 5

keith-schultz
Télécharger la présentation

FOIL Day 3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. FOIL Day 3 We will continue with presentations from yesterday. Then begin multiplying a polynomial by a binomial.

  2. Homework #106 answers 2. x2 + 4x + 4 4. t2 + t – 12 6. z2 – 4z – 5 8. 2x2 – 18 10. 2l2 – 3l -20 12. 5q2 + 24q – 5 14. 6m2 – 6 16. 10a2 – 19a + 6 18. 2x2 – 3xy + y2

  3. Complete any presentations from yesterday. Remember the same rules apply. Be courteous to those who still have to present.

  4. Multiplying a Polynomial by a Binomial Example: (3x + 2)(2x2 – 4x + 5) One way is to use distribution. Take the first term of the binomial and multiply it to the trinomial. 3x(2x2 – 4x + 5) 6x3 -12x2 + 15x Then multiply the second term of the binomial and multiply it to the trinomial. 2(2x2 – 4x + 5) 4x2 – 8x + 10 Then combine the like terms from the two products 6x3 -12x2 + 15x + 4x2 – 8x + 10 6x3 -8x2 + 7x + 10

  5. For those who like standard multiplication 2x2– 4x + 5 multiply 3x + 2 4x2 – 8x + 10 6x3 -12x2 + 15x then add 6x3 – 8x2 + 7x + 10 Same answer, but in my opinion if you line up the like terms and add straight down, it is easier.

  6. A little more explanation of the last method First I multiplied everything on the top by “2” Then I multiplied everything on the top by “3x” I lined up the like terms and added straight down.

  7. Which ever you like, use it! Please complete #1-10 on page 21 as class work. Check your answers with Ms. Cruz. There is no homework. Have a great weekend and a nice Memorial Day! I will see you Tuesday, pain or no pain!

More Related