Perkalian bentuk aljabar 1.(3x-2)(2x-4) 2.(4x-3)(3x+4) 3.(a-4)(a+b)

(3x-2)(2x-4) = 6x²-12x-4x+8
= 6x²-16x+8
(4x-3)(3x+4) = 12x²+16x-9x-12
= 12x²+7x-12
(a-4)(a+b) = a²+ab-4a-4b

1. 6x^2 -12x - 4x + 8
 = 6x^2 - 16x + 8
2. 12x^2 + 16x - 9x -12
 12x^2 + 7x - 12
3. a^2 +ba - 4a - 4b