Find the GCF of 20x − 4 .
To find the greatest common factor (GCF) of 20x and -4, we need to find the largest number that divides evenly into both 20x and -4.
The prime factorization of 20x is 2 * 2 * 5 * x = 4 * 5 * x = 20x.
The prime factorization of -4 is -1 * 2 * 2 = -1 * 4 = -4.
The common factors of 20x and -4 are 2 and 4.
However, the GCF is the largest number that divides evenly into both, so the GCF is 4.
Therefore, the GCF of 20x and -4 is 4.
To find the greatest common factor (GCF) of 20x - 4, we need to factorize the expression.
20x - 4 can be written as:
4(5x - 1)
Now, we can look for the common factors of the expression 5x - 1 and 4.
The GCF is the largest factor that both terms have in common.
In this case, there are no common factors other than 1, so the GCF of 20x - 4 is 1.
To find the greatest common factor (GCF) of 20x - 4, we need to factorize the expression first.
Step 1: Factor out the common factor (if it exists) from both terms.
In this case, the common factor is 4 since it can be evenly divided into both 20 and 4.
20x - 4 = 4(5x - 1)
Step 2: Simplify the expression.
The factored form of 20x - 4 is 4(5x - 1).
Step 3: Identify the GCF.
The GCF is the numeric value outside the parenthesis, which in this case is 4.
Therefore, the GCF of 20x - 4 is 4.