The Difference of Square: a^2 - b^2 = (a + b)(a - b)

Sara did a question as: 2x^2 - 2y^2 = (2x + 2y)(2x - 2y).

What's wrong with Sara's work? How to fix it?

step-by-step explanation:

divide, then simplify your answer.

1. make -15.66 ÷   5.8 a fraction. then divide.

2. simplify.  

3. final answer.  

10 - 75

step-by-step explanation:

there's nothing attached so it's most likely anything in that range.

if the angular bisector of an triangle bisects the opposite side, prove that the other two sides are equal.