Algebra-1

To simplify (-x²y² - 2x³y)², we can use the formula for the square of a binomial:

(a - b)² = a² - 2ab + b²

In this case, a is -x²y² and b is 2x³y. Substituting these values into the formula, we get:

(-x²y² - 2x³y)² = (-x²y²)² - 2(-x²y²)(2x³y) + (2x³y)²
                =  x⁴y⁴ + 4x⁵y³ + 4x⁶y²