Solve.1. x = x = {, }

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Homework Log

Moon

11/23

Lesson 5 – 4

Learning Objective: To divide polynomials by long division

Hw: Pg.

11/23/15 Lesson 5 – 4 Dividing Polynomials Day

1Algebra II

To divide polynomials using long division

Learning Objective

1. Divide

3 5

1

32R

1+

2.

2 4 3 7

2

43

R

1

2

1 7

8

1 6

1

218+

3. Divide

x – 5 𝑥2+3𝑥−40x

𝑥2- 5x

R

+ 8

8x - 40 8x

-

- 400

---

= x + 8

4. Divide

x – 3 𝑥2+7 𝑥−30x

𝑥2- 3x

R

+ 10

10x - 30 10x

-

- 300

--

-

= x + 10

5. Divide

-x +3 𝑥2+7 𝑥−11-x

𝑥2- 3x

R

- 10

10x - 11 10x

-

- 3019

-

-

-

= - x – 10 +

6. Divide

5x + 5 10 𝑥2+15 𝑥+132x

10 𝑥2+ 10x

R

+ 1

5x +13 5x

-

+ 58

-

- -

= 2x + 1 +

7. Divide

3x +8 12𝑥2+23 𝑥+154x

12𝑥2+32x

R

- 3

-9x + 15 -9x

-

- 2439

-

-

-= 4x – 3 +

8. Divide

5x + 5 10 𝑥6+5 𝑥5+0𝑥4+10𝑥3+0𝑥2−20 𝑥−152

10 𝑥6+10

-

-5 +0 -5

-

-55

-- -

+0 +0

+10

+

5 +5- - 5 + 0

+

5 + 5- - -5 -20x

-

-5 -5- - -15x -15

- 3

9. Area of a rectangle is . The length if 2x – 5 ft. Find the width.

Area = (length)(width)

= (2x – 5)(width)

= width

Word Problem

9. Divide

2x – 5 2 𝑥2−11𝑥+15x

2 𝑥2- 5x

R

- 3

-6x + 15 -6x

-

+150

-- -

Width = x – 3 ft

10. Divide

𝑥2+1 3 𝑥4−4 𝑥3+12𝑥2+0 𝑥+53

3 𝑥4 + 3

9

- 4

-4 +9 +0x-

-4 -4x

-

- -

+ 4x+ 5

+ 9

9 + 9- -

4x - 4R3

Divide by long division

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Assignment:

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