Simplifying the Expression (x²y - 3y² + 5xy²) - (-x²y + 3xy² - 3y²)
This expression involves combining like terms within parentheses. Let's break down the steps:
1. Distribute the negative sign:
Remember that subtracting a quantity is the same as adding its negative. Therefore, we can rewrite the expression as:
(x²y - 3y² + 5xy²) + (x²y - 3xy² + 3y²)
2. Combine like terms:
Identify terms with the same variables and exponents. For instance, x²y and x²y are like terms.
- x²y terms: x²y + x²y = 2x²y
- xy² terms: 5xy² - 3xy² = 2xy²
- y² terms: -3y² + 3y² = 0
3. Simplify the expression:
Combining the simplified terms, the final simplified expression is:
2x²y + 2xy²
Therefore, the simplified form of (x²y - 3y² + 5xy²) - (-x²y + 3xy² - 3y²) is 2x²y + 2xy².