(5x-1)(5x+1) - (5x+2)^2 = 0Expanding the left side:25x^2 + 5x - 5x - 1 - (25x^2 + 20x + 20x + 4) = 025x^2 - 1 - 25x^2 - 40x - 4 = 0-40x - 5 = 0-40x = 5x = -5/40x = -1/8
Ответ: x = -1/8
(5x-1)(5x+1) - (5x+2)^2 = 0
Expanding the left side:
25x^2 + 5x - 5x - 1 - (25x^2 + 20x + 20x + 4) = 0
25x^2 - 1 - 25x^2 - 40x - 4 = 0
-40x - 5 = 0
-40x = 5
x = -5/40
x = -1/8
Ответ: x = -1/8