# LESSON 7-2 PROBLEM SOLVING FACTORING BY GCF

From a previous example, you found the GCF of 25 b 3 and 10 b 2 to be 5 b 2. Factoring is very helpful in simplifying and solving equations using polynomials. Something to look forward to! Factor out the like factor, 5, from the second group. In both cases the lowest exponent is 1. You can check this by doing the multiplication. Students Homeschoolers Adults Teachers. Now onto the variable part. Putting this together we have a GCF of 3 xy. Intermediate Algebra Tutorial A prime factor is similar to a prime number —it has only itself and 1 as factors. Hopefully you now understand how to factor polynomials if the polynomials have a greatest common factor. After completing this tutorial, you should be able to:

Hence our GCF is. -72 that this is not in factored form because of the minus sign we have before the 7 in the problem.

This time it isn’t a monomial but a binomial that we have in common. Factoring gives you another way to write the expression so it will be equivalent to the original problem.

Look for common factors between the factored forms of the paired terms. If sollving have four terms with no GCF, then try factoring by grouping.

# Greatest Common Factor

Multiplying them together will give you the GCF: Group terms of the polynomial into pairs. The correct answer is a 5 8 a — A whole number, monomial, or polynomial can be expressed as a product of factors. To find the GCF of greater numbers, you can factor each number to find their prime lesdon, identify the prime factors they have in common, and then multiply those together. As shown above when we divide 2 x by 2 x we get 1, so we need a 1 as the third term inside of the.

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So the GCF of our variable part is xy. Connect and Follow Algebra Gvf.

Factor 45 c 2 d 2. Factor the common factor 5 out of the second group.

## Factoring by grouping

By the time I’m are through with you, you will be a factoring machine. Make sure that you pay careful attention not only to the process used for factoring, but also to the make-up of the polynomials that can be factored using this method. Intermediate Algebra Tutorial The method remains the same: Factor out the 5 b 2.

The two groups 7 x x — 3 and 5 x — 1 do not have any common factors, so this polynomial cannot be factored any further. This process is basically the reverse of the distributive property found in Tutorial 5: Answer Cannot be factored.

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

The largest monomial that we can factor out of each term is 2 x. Find the greatest common factor of 81 c 3 d and 45 c soving d 2.

ELKE BOSSE DISSERTATION To factor a polynomial, first identify the greatest common factor of the terms, and then apply the distributive property to rewrite the expression. Find the greatest common factor of 56 xy and 16 y 3.

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

Math works just like anything else, if you want to get good at it, then you need to practice it. Factor out a GCF from each separate binomial. Take the numbers 50 and This problem looks a little different, because now our GCF is faxtoring binomial. Factor the GCF, 4 aout of the first group. C a 5 a — 1 Incorrect. Notice that in the example below, the first yb is x 2and x is the only variable present.