MA220Lesson3

MA220Lesson3 - MA 220, Lesson 3, Textbook Section 5.3...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 MA 220, Lesson 3, Textbook Section 5.3 Multiplying Polynomials (part 1) To multiply a polynomial by any monomial multiplier, use the distributive property. Ex 1: 2 (4 2 3)(5 ) x x x  Ex 2: 2 3 2 4 (3 2 6 9) x x x x Be cautious when multiplying by a monomial with a negative coefficient. Be sure to distribute the negative sign. Ex 3: 3 4 (6 2 1) x x x When multiplying two binomials, the distributive property could be used; as illustrated below. 2 2 (4 3)(2 4) 4 (2 4) 3(2 4) 8 16 6 12 8 10 12 x x x x x x x x F O I L xx However, as seen above; the word FOIL may be used to help students remember to multiply four pairs. F (first terms in each binomial are multiplied), O (outer terms in each binomial are multiplied), I (inner terms in each binomial), and L (last terms in each). There is a good picture on page 320 of the textbook that shows logically why FOIL works by illustrating the area of a rectangle (Figure 5.3).
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

MA220Lesson3 - MA 220, Lesson 3, Textbook Section 5.3...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online