(2x-3)(2x+3) = 4x(x+1)-1
4x^2 +6x -6x -9 = 4x^2 +4x -1
4x^2 -4x^2 -4x = -1 +9
-4x = 8
x = 8 ÷ (-4)
x = -2
ответ: -2.
(2x-3)(2x+3) = 4x(x+1)-1
4x^2 +6x -6x -9 = 4x^2 +4x -1
4x^2 -4x^2 -4x = -1 +9
-4x = 8
x = 8 ÷ (-4)
x = -2
ответ: -2.