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Tuesday, July 1 Special Factoring. Difference of Squares Example: m 2 – 64 (m) 2 – (8) 2 (m +...
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Transcript of Tuesday, July 1 Special Factoring. Difference of Squares Example: m 2 – 64 (m) 2 – (8) 2 (m +...
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Tuesday, July 1Tuesday, July 1Special FactoringSpecial Factoring
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Difference of SquaresDifference of SquaresExample: Example: mm22 – 64 – 64
(m)2 – (8)2
(m + 8)(m – 8)
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Example 2: 36x2 – 49y2
(6x)2 – (7y)2
(6x + 7y)(6x – 7y)
Example 3: 48a3 – 12a12a(4a2 – 1)12a((2a)2 – (1)2)12a(2a + 1)(2a – 1)
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Example 4: 2x4 – 1622(x4 – 81)2((x2)2 – (9)2)2(x2 + 9)(x2 – 9)2(x2 + 9)((x)2 – (3)2)2(x2 + 9)(x + 3)(x –
3)
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Now you try!Now you try!Example: 4yExample: 4y44 - 2500 - 2500
Example: 5xExample: 5x33 + 15x + 15x22 – 5x – 15 – 5x – 15
4(y2 + 25)(y + 5)(y – 5)
5(x + 1)(x – 1)(x + 3)
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Sum of SquaresSum of Squares
General Formula: (x)2 + (y)2
PRIME!!! Cannot be factored
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Difference of CubesDifference of CubesGeneral Formula: (a)3 – (b)3
(a – b)(a2 + ab + b2)Example: x3 – 27
(x)3 – (3)3
(x – 3)(x2 + 3x + (3)2)
(x – 3)(x2 + 3x + 9)
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Sum of CubesSum of CubesGeneral Formula: (a)3 + (b)3
(a + b)(a2 – ab + b2)Example: c3d3 + 64
(cd)3 + (4)3
(cd + 4)((cd)2 – 4cd + (4)2)
(cd + 4)(c2d2 – 4cd + 16)
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Perfect Square TrinomialsPerfect Square TrinomialsGeneral Formula: (a)2 + 2ab + (b)2
(a + b)2
General Formula: (a)2 – 2ab + (b)2
(a – b)2
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Example: x2 – 12x + 36(x)2 – 2·x·6 + (6)2
(x – 6)(x – 6)
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Factoring Review