Subtract :
`4xy^(2)` from `3xy^(2)`

Answer

To solve the problem of subtracting \( 4xy^2 \) from \( 3xy^2 \), we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Expression to Subtract**: We need to subtract \( 4xy^2 \) from \( 3xy^2 \). This means we will write the expression as:
\[ 3xy^2 - 4xy^2 \]

2. **Check for Like Terms**: Both terms \( 3xy^2 \) and \( 4xy^2 \) are like terms because they have the same variable \( x \) and \( y \) raised to the same power (2).

3. **Perform the Subtraction**: Now we can subtract the coefficients of the like terms:
\[ 3 - 4 = -1 \]
Therefore, we have:
\[ 3xy^2 - 4xy^2 = -1xy^2 \]

4. **Write the Final Answer**: The final answer can be simplified to:
\[ -xy^2 \]

### Final Answer:
\[ -xy^2 \]