7.25. 1) (2x - 1)-(x + 5) = (4x + 5)(x + 1)²; 2) (x - 5) (x - 1) - 49 = (x – 8) (x2 - 2);
3) 9((3x - 4) - (2x - 10)-) = (5x - 14) (x + 6)²;
4) 3(4.xº - 1)(5x + 3) = 8(4x2 - 1).​


7.25. 1) (2x - 1)-(x + 5) = (4x + 5)(x + 1)²; 2) (x - 5) (x - 1) - 49 = (x – 8) (x2 - 2);3) 9((3x -

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