(3x-4) (5-2x)=... Tolong dijawab yaa

(3x - 4)(5 - 2x)
= 15x - 20 + 6x² + 8x
= 6x² + 23x - 20

(3x-4) (5-2x) = 15x-6x²-20+8x
= 15x-20-6x²+8x
= -6x²+8x+15x-20
= -6x²+23x-20