Minta tolomg dong kak!Saya bingung :/ ??..

1. a. 12a + 8
b. x^2 + x -6
c. 2x^2 +4xy-7x-2y+3

a . 4(3a + 2)
= 12a + 8

b. (x + 3)(x - 2)
= x² - 2x + 3x - 6
= x² + x - 6

c. (2x - 1)(x + 2y - 3)
= 2x² + 4xy - 6x - x - 2y + 3
= 2x² + 4xy - 7x - 2y + 3