![]() Remember that 1 is always a factor of any expression. If an expression cannot be factored it is said to be prime. Remember, this is a check to make sure we have factored correctly.Īgain, find the greatest common factor of the numbers and each letter separately. Then, "What is the largest common factor of x 3, x 2, and x?" Say to yourself, "What is the largest common factor of 12, 6, and 18?" Multiplying, we get the original and can see that the terms within the parentheses have no other common factor, so we know the solution is correct. For instance, 6 is a factor of 12, 6, and 18, and x is a factor of each term. In other words, don’t attempt to obtain all common factors at once but get first the number, then each letter involved. A good procedure to follow is to think of the elements individually. You should be able to mentally determine the greatest common factor.
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