1) (6x-1)(6x+1) - 4x(9x+2) = -136x^2 - 1 - 36x^2 - 8x = -1-1 - 8x = -1-8x = 0x = 0
2) (8-9a)a = -40 + (6-3a)(6+3a)8a - 9a^2 = -40 + 36 - 9a^2-9a^2 + 8a = -49a^2 - 8a = 4a(9a - 8) = 4a = 4/(9a - 8)
Таким образом, корень уравнений равен:1) x = 02) a = 4/(9a - 8)
1) (6x-1)(6x+1) - 4x(9x+2) = -1
36x^2 - 1 - 36x^2 - 8x = -1
-1 - 8x = -1
-8x = 0
x = 0
2) (8-9a)a = -40 + (6-3a)(6+3a)
8a - 9a^2 = -40 + 36 - 9a^2
-9a^2 + 8a = -4
9a^2 - 8a = 4
a(9a - 8) = 4
a = 4/(9a - 8)
Таким образом, корень уравнений равен:
1) x = 0
2) a = 4/(9a - 8)