Question

1. find the lcm of $15x^2y$ and $3x^2y^2$.

$30x^2y^2$
$18x^4y^3$
$45x^4y^3$
$15x^2y^2$

Explanation:

Step1: Factor constants

15 = 3×5, 3 = 3
LCM of constants: 15

Step2: Find variable exponents

For x: max(2,2)=2
For y: max(1,2)=2

Step3: Combine results

15×x²×y² = 15x²y²

Answer:

15x²y²