Warm Up.

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Factoring Polynomials

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Factoring Polynomials

Factoring Polynomials

Factoring Polynomials

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Presentation transcript:

Warm Up

Factor by Grouping Example 1: FACTOR: 3xy - 21y + 5x – 35 Factor the first two terms: 3xy - 21y = 3y (x – 7) Factor the last two terms: + 5x - 35 = 5 (x – 7) The green parentheses are the same so it’s the common factor Now you have a common factor (x - 7) (3y + 5)

Factor by Grouping Example 2: FACTOR: 6mx – 4m + 3rx – 2r Factor the first two terms: 6mx – 4m = 2m (3x - 2) Factor the last two terms: + 3rx – 2r = r (3x - 2) The green parentheses are the same so it’s the common factor Now you have a common factor (3x - 2) (2m + r)

Factor by Grouping Example 3: FACTOR: 15x – 3xy + 4y –20 Factor the first two terms: 15x – 3xy = 3x (5 – y) Factor the last two terms: + 4y –20 = 4 (y – 5) The green parentheses are opposites so change the sign on the 4 - 4 (-y + 5) or – 4 (5 - y) Now you have a common factor (5 – y) (3x – 4)

NO NO NO Are there any common factors? Is it a trinomial? Is it a difference of two squares?

Split into parts and factor. Doesn’t work! This is why it helps to write equations in standard form!

Rearrange terms and factor in parts

You Try! #1

You Try! #2

You Try! #3

You Try! #4

You Try! #5