ГДЗ Алгебра 7 клас Тарасенкова (2024)

(2x – 6)2 – (5х + 1)2 = 0;
(2x – 6 – 5x – 1)(2x – 6 + 5x + 1) = 0;
(–3x – 7)(7x – 5) = 0; 3x + 7 = 0;
3x = –7; x = –21/3;
7x – 5 = 0; 7x = 5;
x = 5/7.