Question

10(4-2х)(х+2)
Помогите!

Answer 1

10 ( 4 - 2х ) ( х + 2 ) = 10 ( 4х + 8 - 2х² - 4х ) = 40х + 80 - 20х² - 40х = -20х² + 80.

Answer 2

$10(4 - 2x)(x + 2) = 10(4x + 8 - {2x}^{2} - 4x) = 40x + 80 - {20x}^{2} - 40x = { - 20x}^{2} + 80$

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Удачи))))