Question

please help me please help​

Answer 1

Answer:

Step-by-step explanation:

[X+Y]² = X² + Y² + 2AB

[X-Y]² = X² + Y² - 2AB

X² - Y² = [X+Y] [X-Y]

[X+A] [X-B] = X²- XB - AX - AB

[X+Y+Z]² = X² + Y² + Z² -XY-YZ-ZX

HOPE IT HELPS YOU VERY WELL