6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
6.3 Dividing Polynomials
Day 1
Objective: Divide polynomials using long division.
Jan 8­9:41 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
Check Skills You'll Need
Simplify each expression.
1. (x + 3)(x ­ 4) + 2
2. (2x + 1)(x ­ 3)
3. (x + 2)(x + 1) ­ 11
4. ­3(2 ­ x)(x + 5)
Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Blast from the Past:
1. Use long division to
divide 5580 by 12.
Is 12 a factor of 5580?
2. Use long division to
divide 4789 by 23.
Is 23 a factor of 4789?
Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
The remainder is ________ when you divide by a factor.
Jan 8­10:23 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Try something NEW:
1. Use long division to
divide 42x2 by 2x.
Is 2x a factor of 42x2?
2. Use long division to
divide 32x2 by 4x.
Is 4x a factor of 32x2?
Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Time for a Challenge:
1. Use long division to divide x2 + 3x ­ 12 by x ­ 3.
Is x ­ 3 a factor of x2 + 3x ­ 12? Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Time for a Challenge:
2. Use long division to divide x2 ­ 3x + 1 by x ­ 4.
Is x ­ 4 a factor of x2 ­ 3x + 1? Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Time for a Challenge:
3. Use long division to divide x2 + 6x + 8 by x + 4.
Is x + 4 a factor of x2 + 6x + 8? Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Time for a Challenge:
4. Use long division to divide x3 + 3x2 ­ 6x ­ 7 by x + 4.
Is x + 4 a factor of x3 + 3x2 ­ 6x ­ 7? Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Time for a Challenge:
5. Use long division to divide x3 ­ 4x2 + 3x + 2 by x + 2.
Is x + 2 a factor of x3 ­ 4x2 + 3x + 2? Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
L o n g Division
Time for a Challenge:
6. Use long division to divide 2x3 ­ 9x2 + 15 by 2x ­ 5.
Is 2x ­ 5 a factor of 2x3 ­ 9x2 + 15?
Hint: Make room for the x term not listed. Jan 8­9:46 AM
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6­3 Day 1 Dividing Polynomials web.notebook
January 14, 2010
Homework:
page 324 (1 ­ 12)
Jan 8­9:48 AM
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