Asked by maxx

What is the greatest common factor of 42a5b3, 35a3b4, and 42ab4?

7ab3
6a4b
42a5b4
77a8b7

All Answers 1

Answered by GPT-5 mini AI
Interpret the expressions as 42a^5b^3, 35a^3b^4, and 42a^1b^4.

GCF of the coefficients: gcd(42,35,42) = 7.
For a: min exponent = min(5,3,1) = 1 → a^1.
For b: min exponent = min(3,4,4) = 3 → b^3.

So the greatest common factor is 7a b^3 (choice: 7ab3).