Simplification: - (square of X - square of Y) + [- 3xy - (square of X + square of Y)]: Xy - {the square of 1 / 2x - [the square of 3y-2 (the square of xy-3y) - 1]} If we know the square of a = 2A - 3AB, B = the square of a + 2Ab, we can find:

Simplification: - (square of X - square of Y) + [- 3xy - (square of X + square of Y)]: Xy - {the square of 1 / 2x - [the square of 3y-2 (the square of xy-3y) - 1]} If we know the square of a = 2A - 3AB, B = the square of a + 2Ab, we can find:

-(square of X - square of Y) + [- 3xy - (square of X + square of Y)] = - X & # 178; + Y & # 178; - 3xy-x & # 178; - Y & # 178; = - 2x & # 178; - 3xyxy - {1 / 2x square - [3Y square-2 (xy-3y Square) - 1]}. = XY-1 / 2x & # 178; + (3Y & # 178; - 2XY + 6y & # 178; - 1) = XY-1 / 2x & # 178; +