Решите уравнения :  1) 2x (3 + 8x) - (4x - 3) (4x + 3) = 1,5x 2) ( x - 1) ( x + 2) = 2 ( x - 5 )² - x ( x - 3) 3)( 6x - 7)² - 5 (2x - 5) (2x +5) - 2 (4x - 15) (2x - 4) = -2 
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