Find the GCF (greatest common factor) of the following terms.
{10,49x^3,21}
The prime factorization of 10 is 2 * 5.
The prime factorization of 49x^3 is 7^2 * x^3.
The prime factorization of 21 is 3 * 7.
The GCF of 10, 49x^3, and 21 is the product of the common prime factors raised to the lowest exponent, which is 7
Therefore, the GCF of 10, 49x^3, and 21 is 7.