Question

What is the greatest common factor of:

30b², 80b², and 20b³?
a. (10b²)
b. (5b²)
c. (20b²)
d. (30b²)

Answer 1

The correct answer is A.

Explanation:

30b² = 10 × 3 × b × b

80b² = 10 × 8 × b × b

20b³ = 10 × 2 × b × b × b

GCF = 10b²