(2x+3) (3x+2) Tolong Bantu Pliss

(2x + 3) (3x + 2)
6x² + 4x + 9x + 6
6x² + 13x + 6

Kalau aku pake cara pelangi jadi.....
misal nih, (A + B) (C + D) ok
nah 1. A × B
2. A × D tambah B × C
3. B × D
jadi, 1. 2X × 3X = 6X²
2. (4X) + (9X) = 13 X
3. (3×2) = 6
....... 6X²+13X+6
tank you semoga benar ya