Решите уравнение: (2x-3)(2x+3)-(4x+5)(x-3)= -1
( 2х - 3)*( 2x + 3 ) - ( 4x + 5)*( x - 3 ) = - 1 4x² - 9 - ( 4x² - 12x + 5x - 15 ) = - 1 4x² - 9 - ( 4x² - 7x - 15 ) = - 1 4x² - 9 - 4x² + 7x + 15 = - 1 7x = - 1 - 6 7x = - 7 x = - 1