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Warm up (12x2 + 8x – 6) – (9x2 – 2x + 5) Find the area and perimeter

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Presentation on theme: "Warm up (12x2 + 8x – 6) – (9x2 – 2x + 5) Find the area and perimeter"— Presentation transcript:

1 Warm up (12x2 + 8x – 6) – (9x2 – 2x + 5) Find the area and perimeter

2 Questions over hw?

3 GCF What does it stand for? What is it?

4 What is the greatest common factor??
36 1, 2, 3, 4, 6, 9, 12, 18, 36 24 1, 2, 3, 4, 6, 8, 12, 24 The number 12

5 What is the greatest common factor??
35 1, 5, 7 The number 5

6 What is the greatest common factor??
3y 1, y -8xy 1, 2, 4, 8 x y y

7 What is the greatest common factor??
22x2 1, 2, 11, xx -11x -1, x 11x

8 What is the greatest common factor??
-4x6 -x4 -2x2 -1, 2, xxxxxx -1 xxxx -1, 2 xx -x2

9 What is the greatest common factor??
8x3y5 -20x5y3 12x7y6 1, 2, 4, xxx yyyyy -1, 2, 4, 5, 10, xxxxx yyy 1, 2, 3, 4, 6, 12 xxxxxxx yyyyyy 4x3y3

10 What is the greatest common factor??
x5 2 y xxxxx 1, 2 y PRIME

11 Factoring means to write as a product
Always look for a Greatest Common Factor 1st. Factor 4x + 6y What is their greatest common factor? = 2( ) 2x + 3y Now, DIVIDE each term by the GCF.

12 Now, DIVIDE each term by the GCF.
Factor 8a3 + 4a2 + 12a What is their GCF? = 4a( ) 2a2 + a + 3 Now, DIVIDE each term by the GCF. 40x2 – 100xy – 80y2 = 20( ) 2x2 – 5xy – 4y2

13 Now, DIVIDE each term by the GCF.
Factor 2h2k + 2k What is their GCF? = 2k( ) h2 + 1 Now, DIVIDE each term by the GCF. 12x5y2 + 9x4y2 - 6x3y2 = 3x3y2( ) 4x2 + 3x – 2

14 CW/HW GCF Practice


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