Question

Поможіть будь ласка....​

Answer 1

1) 2х(х-3) - (х-2)² = 2х² - 6х - (х² - 4х + 4) = 2х² - 6х - х² + 4х - 4 = х² - 2х - 4

2) (4х + 3)² = (4х)² + 2 × 4х × 3 + 3² = 16х² + 24х + 9

3) (4х+3)(4х-3) = (4х)² - 3² = 16х² - 9