tolong jawab ya:) ps:besok dikumpul

a) (x + 5)(x + 8)
= x² + 5x + 8x + 40
= x² + 13x + 40

b) (3x - 2)(2x + 3)
= 6x² - 4x + 9x - 6
= 6x² + 5x - 6

c) (3x + 4)(5x - 3)
= 15x² + 20x - 9x - 12
= 15x² + 11x - 12

d) (5x + 3)²
= 25x² + 30x + 9

e) (2x - 9y)²
= 4x² - 36xy + 81y²

A. x^2+5x+8x+40
= x^2+13x+40
C. 15x^2+20x-9x-12
= 15x^2+11x-12

semoga membantu
maaf klo tanggung