Question

Сократите срочно 2а(4а-b)-(2a+3b)(4a-b)

Answer 1

$2a*(4a-b)-(2a+3b)*(4a-b)$
$8a^{2}-2ab-(8a^{2}-2ab+12ab-3b^{2})$
$8a^{2}-2ab-8a^{2}+2ab-12ab+3b^{2}$
$3b^{2}-12ab$

Answer 2

Задание 3.

2а(4а – b) – (2a + 3b)(4a – b)

(2a – (2a + 3b)) × (4a –b)

(2a – 2a – 3b) × (4a – b)

(– 3b) × (4a – b)