# LESSON 7-2 PROBLEM SOLVING FACTORING BY GCF

The method that you choose, depends on the make-up of the polynomial that you are factoring. In the next two tutorials we will add on other types of factoring. When we divide it out of the second term, we are left with This process is basically the reverse of the distributive property found in Tutorial 5: The values 8 and 11 share no common factors, but the GCF of a 6 and a 5 is a 5. Their greatest common factor is 10, since 10 is the greatest factor that both numbers have in common. Find the GCF of the second pair of terms.

Find the greatest common factor of 81 c 3 d and 45 c 2 d 2. The largest monomial that we can factor out of each term is. Rewrite the polynomial using the factored terms in place of the original terms. Sum of the products: Find the GCF of the first pair of terms.

In both cases, it is the distributive property that is being used.

If there is no common factor for all of the terms in the polynomial, another technique needs to be used to see if the polynomial can be factored. Rewrite the polynomial using the factored terms in place of the original terms. Factor out the like factor, 5, from the second group. The method remains the same: Example Problem Find the greatest common factor of 25 b 3 and 10 b 2. Comments We would love to hear what you have to say about this page!

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# Try Factor a Polynomial by Finding Its Greatest Common Factor – WebMath

A whole number, monomial, or polynomial can be expressed as a product of factors. Factoring is very helpful in simplifying and solving equations using polynomials. D 8 xy 3 Incorrect. Note that if we multiply our answer out, we do get the original polynomial.

In this lesson we will study polynomials that can be factored using the Greatest Common Factor. Factor out the GCF: Intermediate Algebra Tutorial You can check this by doing the multiplication. For example, we can write 10 as 5 2where 5 and 2 are called factors of If you can find common factors for each term of the polynomial, then you can factor the polynomial.

Properties of Real Numbers. Hopefully you now understand how to factor polynomials if the polynomials have a greatest common factor.

# Factoring by grouping (article) | Khan Academy

When you factor a polynomial, you are trying to find the quantities that you multiply together in order to fxctoring the polynomial. The following are facroring that can assist you in the topics that were covered on this page: Product of a number and a sum: You must be able to factor out of every term in order to identify the GCF.

Their greatest common factor is 10, since 10 is the greatest factor that both numbers have in common. The distributive property allows you to factor out common factors.

Note that if you do not factor the greatest common factor at first, you can continue factoring, rather than start all over.

## Try Factor a Polynomial by Finding Its Greatest Common Factor

Multiplying them together will give you the GCF: Factors are the building blocks of multiplication. Take the numbers 50 solvinh The largest number that can be divided out of those numbers is 3.

Group terms kesson the polynomial into pairs. Before we get started, it may be helpful for you to review the Dividing Monomials lesson. The polynomial is now factored.

Even the best athletes and musicians had help along the way and lots of practice, practice, practice, to get good at their sport or instrument. Answer Cannot be factored.