Final answer:
To factor 98 - 70 using the GCF, find the largest number that divides both numbers evenly. The GCF is 14. Rewrite the expression as 14 * (7 - 5).
Step-by-step explanation:
To factor the expression 98 - 70 using the GCF (Greatest Common Factor), we need to find the largest number that divides both 98 and 70 evenly.
First, let's find the prime factorization of both numbers:
98 = 2 * 7 * 7
70 = 2 * 5 * 7
The GCF is the product of the common prime factors raised to their lowest exponent. In this case, the GCF is 2 * 7 = 14.
Therefore, we can rewrite the expression 98 - 70 as 14 * (7 - 5).