To find the greatest common factor (GCF) of 20x and -4, we need to consider the prime factors of each term.
The prime factors of 20x are 2, 2, 5, and x.
The prime factors of -4 are 2 and 2.
To find the GCF, we take the common prime factors and multiply them together: 2 x 2 = 4.
Therefore, the GCF of 20x and -4 is 4.
Find the GCF of 20 X-4 for
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