1 / 7

Warm-Up

Warm-Up. Foil: (x + 3)(x + 4) 2. (x – 5)(x + 2) (x – 6)(x – 8) 4. (x + 4)(x – 10) Factor out the GCF: 8x 2 y – 6xy 6. 12x 3 – 9x 2 – 36x 7. 16x 2 y 2 + 8xy 2 + 24xy 8. 40x 2 + 50x. Section 8-5. Add and Subtract Rational Expressions. Example 1.

razi
Download Presentation

Warm-Up

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. Warm-Up Foil: (x + 3)(x + 4) 2. (x– 5)(x + 2) (x – 6)(x – 8) 4. (x + 4)(x – 10) Factor out the GCF: 8x2y – 6xy 6. 12x3 – 9x2 – 36x 7. 16x2y2 + 8xy2 + 24xy 8. 40x2 + 50x

  2. Section 8-5 Add and Subtract Rational Expressions

  3. Example 1 Perform the indicated operation: a.) 12 2 5x 5x b.) 3x 1 2x + 5 2x + 5 = 10 5x – = 2 x = 3x + 1 2x + 5 +

  4. Example 2 Find the least common multiple of 5x2 – 45 4x2 + 24x+ 36 Step 1:Factor each polynomial. 5(x2 – 9) 5(x – 3)(x + 3) Step 2:Form the LCM by writing each factor to the highest power it occurs in either polynomial. 4(x2 + 6x + 9) 4(x + 3)(x + 3) 20(x – 3)(x + 3)2

  5. Example 3 Add: 3 2x 10x2 5x2 – 10x + Step 1:Factor the denominator. 3 10x2 2x 5x(x –2) + Step 2:LCM is 10x2(x – 2). 3 10x2 (x – 2) (x – 2) 2x 5x(x –2) 2x 2x • + • 3x – 6 10x2 (x – 2) Step 3:Multiply. 4x2 10x2 (x –2) + Step 4:Add numerators. 4x2 + 3x – 6 10x2 (x – 2)

  6. Example 4 Simplify: 6 1 x – 5 x 3 2 x x – 5 Step 1:Find LCM of all denominators. + x(x – 5) x(x – 5) • – x(x – 5) 6x + x – 5 7x – 5 x – 15 Step 2:Multiply by the LCM. = 3(x – 5) – 2x Step 3:Simplify.

  7. Homework Section 8-5 Pages 586 –587 1, 3, 5, 6, 10, 12, 13, 17, 18, 20, 21, 22, 27, 30, 31, 32, 35

More Related