Упростите!!!!!!!!!!!!

Question

Упростите!!!!!!!!!!!!

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Answer 1

А) 3 - (3х - 4) + 2х = 3 - 3х + 4 + 2х = 7 - х
б) (у - 3)² - 4у (3 - 2у) = у² - 6у + 9 - 12у + 8у² = 7у² - 18у + 9