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Unformatted text preview: Objectives Section 6.8
Expanding Binomials & Pascal’s Triangle • Use Pascal’s Triangle to expand a binomial Recall…
( x − 3) 2 IS NOT x2 − 9 Let’s look for a pattern
(a + b) 2 = (a + b)(a + b) = a 2 + 2ab + b 2 (a + b) 3 = ( a + b)(a + b)(a + b) = ( x − 3) 3 IS NOT x 3 − 27 The coefficients come from The Pascal’s Triangle Pascal
• Formed by lining the border with 1’s and placing the sum of two adjacent numbers between and underneath the two original numbers… Use Pascal’s triangle to expand…
( a + b) 5 1 Use Pascal’s triangle to expand…
• How will the minus affect our answer? Use Pascal’s triangle to expand…
( 2 x − 1) 4 ( x − 2) 3 Homework
• Page 349 (13), 9, 10, 29, 30 • Start your study guide! • The test is Feb 17 or 18th • If you had trouble on your quiz, now would be a good time to get some help! 2 ...
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 Fall '09
 Johnson
 Algebra, Binomial

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