Factoring Part 1:  GCF and Grouping

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1. Factor the GCF from 7x2y3 + 14x3y + x5y4


  x2y(7y2 + 14x + x3y3)

  7xy(xy2 + 2x + x4y3)

  xy(7xy2 + 14x2 + x4y3)

2. Factor the GCF from 15a3b3 + 12a5 + 6b5

  3(5a3b3 + 4a5 + 2b5)

  3a3(5b3 + 4a2 + 2b5)

  3b3(5a3 + 4a5 + 2b2)

3. Factor by grouping x(4x - 3y) - 2(4x - 3y).

  4x - 3y + x - 2

  (4x - 3y) + (x - 2)

  (4x - 3y)(x - 2)

4. Factor by grouping xy + 4x + 5y + 20

 x(y + 4) + 5(y + 4)

 y(x + 5) + 4(x + 5)

 (x + 5)(y + 4)


5. Factor x2 - 5x + 6.

 (x - 6)(x + 1)

 (x + 3)(x + 2)

 (x - 3)(x - 2)

6. Factor  8x2 - 18x - 5.

 (2x - 5)(4x + 1)

 (2x + 5)(4x - 1)

 (2x - 5)(4x - 1)

7. Factor x4 - 2x2 - 15

 (x2 - 5)(x2 + 3)

  (x2 + 5)(x2 + 3)

  (x2 + 5)(x2 - 3)

8. Factor 4x3 - 4x2 + 4x + 4

 4x( x2 + x + 1)

 4(x3 - x2 + x + 1)

  This is a prime polynomial.

9. Factor x2 + 3x + 1

  (x + 1)(x + 1)

  (x + 1)(x + 3)

  This is a prime polynomial.

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Copyright © 2001 Donna Tupper.