2) (6x-4) (6x+4) 3) (3x-5) (3x+5)

2) (6x.6x) (-4.4) = 36x-16
3) (3x.3x) (-5.5) = 9x-25


semoga bisa membantu dan semoga benar

2. (6x - 4) (6x + 4)
=(6x x 6x)(6x x 4)(-4 x 6x)(-4 x 4)
=36x² + 24x - 24x - 16
=36x² - 16
3. (3x - 5) (3x + 5)
=(3x x 3x)(3x x 5)(-5 x 3x)(-5 x 5)
=9x² + 15x - 15x - 25
=9x² - 25