Find the LCM as a product of prime numbers

Question 1:

A = 2 2 × 5 2 B = 2×3×5

LCM = 2 2 ×3× 5 2

Question 2:

A = 2 2 × 5 2 B = 2× 3 2 ×5

LCM = 2 2 × 3 2 × 5 2

Question 3:

A = 2 4 ×5 B = 2 5 ×3

LCM = 2 5 ×3×5

Question 4:

A = 2 2 ×3×5 B = 3 3 ×5

LCM = 2 2 × 3 3 ×5