CHAPTER_ppt_6_2

# CHAPTER_ppt_6_2 - 6.2 Factoring Trinomials of 2 the Form x...

This preview shows pages 1–5. Sign up to view the full content.

§ 6.2 Factoring Trinomials of the Form x 2 + bx + c

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

View Full Document
Martin-Gay, Beginning and Intermediate Algebra, 4ed 2 Factoring Trinomials Recall by using the FOIL method that F O I L ( x + 2)( x + 4) = x 2 + 4 x + 2 x + 8 = x 2 + 6 x + 8 To factor x 2 + b x + c into ( x + one #)( x + another #), note that b is the sum of the two numbers and c is the product of the two numbers. So we’ll be looking for 2 numbers whose product is c and whose sum is b . Note: there are fewer choices for the product, so that’s why we start there first.
Martin-Gay, Beginning and Intermediate Algebra, 4ed 3 Factor the polynomial x 2 + 13 x + 30. Since our two numbers must have a product of 30 and a sum of 13, the two numbers must both be positive. Positive factors of 30Sum of Factors 1, 30 31 2, 15 17 3, 10 13 Note, there are other factors, but once we find a pair that works, we do not have to continue searching. So x 2 + 13 x + 30 = ( x + 3)( x + 10). Factoring Polynomials Example:

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

View Full Document
Martin-Gay, Beginning and Intermediate Algebra, 4ed 4 Factor the polynomial x 2 – 11 x + 24.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern