Find the hcf of 15a²b² and -24ab | plzzz solve

Step-by-step explanation:

Hello,

First of all, let's find the factors of these two numbers and I will put in boxes the common factors.

The Highest Common Factor (HCF) is found by finding all common factors and selecting the largest one. So, in this case, it gives

Hope this helps.

Do not hesitate if you need further explanation.

Thank you