(2x+1)^2-(2x-2)*(2x+2) = 17
1 + 4x + 4x^2 - (2x - 2)*(2x + 2) = 17
1 + 4x + 4x^2 + 4 - 4x^2 = 17
-12 + 4x = 0
4 x = 12
x = 12 / 4
x=3
ответ: x = 3
(2x+1)^2-(2x-2)*(2x+2) = 17
1 + 4x + 4x^2 - (2x - 2)*(2x + 2) = 17
1 + 4x + 4x^2 + 4 - 4x^2 = 17
-12 + 4x = 0
4 x = 12
x = 12 / 4
x=3
ответ: x = 3