Answer:

Step-by-step explanation:

To subtract the expression 7a² - 3ab from 15a³ - 6ab, you need to subtract each term in the second expression from the corresponding term in the first expression. Here's how you can do it step by step:

Subtract the like terms with the same variable and exponent:

Subtract 7a² from 15a³: (15a³ - 7a²)

Subtract -3ab from -6ab: (-6ab - (-3ab))

Simplify each subtraction:

(15a³ - 7a²) = 15a³ - 7a²

(-6ab - (-3ab)) = -6ab + 3ab

Now, you have simplified expressions:

15a³ - 7a² - 6ab + 3ab

Combine like terms:

-7a² - 3ab

So, the result of subtracting 7a² - 3ab from 15a³ - 6ab is:

15a³ - 7a² - 6ab + 3ab = 15a³ - 7a² - 3ab