1.(3x-5y) × (3x+5y) 2.(6x-2y) × (6x + 2y) 3.(Ax - b) × (Ax + b) 4.(7 - 2x) × (7 × 2x) plis dijawab!!..soalny bkal dikumpulin bsok

1.
(3x - 5y) (3x + 5y)
(3x)² - (5y)²
= 9x² - 25y²

2.
(6x - 2y) (6x + 2y)
(6x)² - (2y)²
= 36x² - 4y²

3.
(ax - b) (ax + b)
(ax)² - b²
= a²x² - b²

4.
(7 - 2x) (7 × 2x)
(7 - 2x) ( 14x)
(7 - 2x) 14x
= 98x - 28x²

semoga membantu...