Minta tolong ya kakak yang cantik soal no.8 a sampai F Pakai cara

a. (3a+2)(-4a+1) = -12a²+3a-8a+2 = -12a²-5a+2
b. (3x+5)(-2+2x) = -6x+6x²-10+10x
= 6x²-6x+10x-10
= 6x²+4x-10
c. (9a-7)(-2a-3) = -18a²-27a+14a+21
= -18a²-13a+21
d. (4x-2)(x+3) = 4x²+12x-2x-6
= 4x²+10x-6
e. (a-4)(3a-2) = 3a²-2a-12a+8
= 3a²-14a+8
f. (5x+4)(4x-7) = 20x²-35x+16x-28
= 20x²-19x-28
semoga membantu ya