The LCM is 280a4b2.
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To find the least common multiple (LCM) of 5ab and 7ab squared, we need to consider the highest power of each prime factor in both numbers. The prime factors in 5ab are 5, a, and b, while the prime factors in 7ab squared are 7, a, and b squared. The LCM will be the product of the highest power of each prime factor, which gives us 35ab squared.
the greatest common factor of 8a3b2 and 12ab4 is 24a3b4
-2ab
1ab
The LCM is: 210