Question

A = (x² + 2xy + y²) - (x² - 2xy + y²).

Answer 1

4xy

Explanation:

assuming you require to simplify the expression

A = (x² + 2xy + y²) - (x² - 2xy + y²)

remove the parenthesis on the first part and distribute the second by - 1

A = x² + 2xy + y² - x² + 2xy - y² ← collect like terms

= (x² - x²) + (2xy + 2xy) + (y² - y²)

= 0 + 4xy + 0

= 4xy