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Bell Ringer:

Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50. Bell Ringer:.

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Bell Ringer:

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  1. Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Bell Ringer: You are making square shaped invitations for a party. You start with a square piece of paper with 6-in sides. You reduce both its length and its width by x. What is the area of the invitation? Justify our reasoning. • 5 minutes • 4 minutes • 3 minutes • 2 minutes • 1 minute • 30 seconds • TIMES UP!!!

  2. Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Bell Ringer: You are making square shaped invitations for a party. You start with a square piece of paper with 6-in sides. You reduce both its length and its width by x. What is the area of the invitation? Justify our reasoning. Answer: Width is (60-x) in and length is (60-x) in. So the area is (6-x)2. This equals 36-12x+xs

  3. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Simplify the product: (a+b)2 = (a+b)(a+b) = a2 + 2ab + b2 Definition: Square of a Binomial: (a-b)s a2 –2ab + b2 the square of the first term plus twice the product of the two terms plus the square of the last term. (a+b)s = a2 + 2ab + b2

  4. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Definition: Product of the Sum and Difference: The product of the sum and difference of the same two terms is the difference of their squares: (a+b)(a-b) = a2 – b2

  5. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Definition: Product of the Sum and Difference: Complete the examples with your elbow partner • (x+4)2 • 2. (x-3)2 • 3. (x+2)(x-2)

  6. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Apply Squaring a Binomial: Square an simplify: (2m-3)2

  7. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference With elbow partners, solve ONLY using mental math: 392 Hint: What is the nearest multiple of 10 to 39 Apply Squared of Binomials: Answer.. Using 40, write 392 as the square of a binomial 392 = (40 – 1)2 = 402 – 40(1) –(1)(40) + 12 = 1600 -80 + 1 = 1521

  8. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Apply Squared of Binomials: Next: (x+ 9)(x-9)

  9. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Apply Squared of Binomials: Next: What is 52 * 48 (mental math)? (50 + 2)(50 - 2) = = 2500 + (50)(-2) + (2)(50) + 2(-2) = 2500 -100 + 100 -4 =2500 -4 = 2496

  10. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Table/Group Problem Be prepared to present to the class. A cylinder had a radius of x+1 and a height of x+4. Write a polynomial in standard for that best describes the total surface area of the cylinder.

  11. Homework: Textbook- Read 504-507 Do: P. 507-509: 1, 3, 5, 8, 12, 15, 16, 20,25,36,50 Objective: SWBAT : find the square of a binomial and to find the product of a sum and difference Reflection If a classmate used mental math and determined that 392 = 1601, what mistake did he or she likely make??

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