Find the LCM as a product of prime numbers

Question 1:

A = 3× 5 2 B = 2× 5 2

LCM = 2×3× 5 2

Question 2:

A = 5 3 B = 2×3× 5 2

LCM = 2×3× 5 3

Question 3:

A = 3 4 B = 3 3 ×5

LCM = 3 4 ×5

Question 4:

A = 2 2 ×3×5 B = 2 3 ×5

LCM = 2 3 ×3×5