8-3 MULTIPLYING POLYNOMIALS AGAIN Goal: Multiply polynomials using the FOIL method Eligible Content: A1.1.1.5.1.

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Presentation transcript:

8-3 MULTIPLYING POLYNOMIALS AGAIN Goal: Multiply polynomials using the FOIL method Eligible Content: A

Vocabulary  FOIL Method – a method that can be used to multiply 2 binomials together.  If you like the Box Method, you can still use it.

FOIL  F – first term in each parentheses  O – outside terms  I – inside terms  L – last term in each parentheses

Multiply using the FOIL method

Examples 1. (3x + 2)(2x + 4) 2. (y + 6)(2y – 5) 3. (2k – 8)(k – 7) 4. (-2n + 4)(3n + 5) 5. (x + 2)(x – 9)  6x x + 8  2y 2 + 7y – 30  2k 2 – 22k + 56  -6n 2 + 2n + 20  x 2 – 7x – 18

A.c 2 – 6c + 8 B.c 2 – 4c – 8 C.c 2 – 2c + 8 D.c 2 – 2c – 8 Find (c + 2)(c – 4).

A.4x 2 – 11x – 3 B.4x x – 3 C.4x x – 3 D.4x x – 3 Find (x + 3)(4x – 1).

A.x 2 + x – 6 B.x 2 – x – 6 C.x 2 + x + 6 D.x 2 + x + 5 Find (x + 2)(x – 3).

A.5x 2 – 8x + 30 B.6x x – 1 C.6x 2 – 8x – 30 D.6x – 30 Find (3x + 5)(2x – 6).

Practice  Worksheet – “8-3 Multiplying Binomials using the FOIL Method.”

Homework  Page 483 #12-23