Bellwork

1
Bellwork

• Find the product
• (x 3)(x 3)
• (x 2)(x 2)

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Pop Quiz

1. How do you add two numbers that have different
   signs?
2. How do you add two numbers that have the same
   sign?
3. What kind of answer do you get when you multiply
   two numbers with the same sign?
4. What kind of answer do you get when you multiply
   two numbers with different signs?

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Unit 2 Algebra Investigations

• Lesson 1 Exploring Algebraic Expressions and
  Equivalent Expressions

Notes 2.3 Find Special Products of Polynomials
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SPECIAL PRODUCTS

• Square of a binomial pattern
• (a b)2 a2 2ab b2
• (a b)2 a2 2ab b2
• Sum and difference pattern
• (a b)(a b) a2 b2

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(Ex 1) Use the square of a binomial pattern.

• Find the product
• a) (4x 3)2

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(Ex 1) Use the square of a binomial pattern.

• Find the product
• b) (3x 5y)2

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Checkpoint Find the product.

• (x 9)2
• (2x 7)2
• 3. (5r s)2

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(Ex 2) Use the sum and difference pattern.

• Find the product
• a) (n 3)(n 3)

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(Ex 2) Use the sum and difference pattern.

• Find the product
• b) (4x y)(4x y)

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Checkpoint Find the product.

• (z 6)(z 6)
• (4x 3)(4x 3)
• (x 5y)(x 5y)