Question

Помогите плз
1 (3а²-4аб+б²)×(2аб)
2 (2х²-3х+1)(5х+4)

Answer 1

(3а² - 4аб + б²)2аб = 6а³б - 8а²б² + 2аб³
(2х² - 3х + 1)(5х + 4) = 10х³ + 8х² - 15х² - 12х + 5х + 4 = 10х³ - 7х² - 7х + 4