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.
Find the GCF of 20x − 4 .
1 answer
1 answer