Tolong jawab nomor 1 donggg sama caranyaa

a. 4a(3a + 2)
= 12a² + 8a

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 - 7x - 2y + 4xy + 3

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Maaf klo salah!!!