(x^6)^3 / (x(x^5)^2) = x^18 / (x(x^10)) = x^18 / (x^11) = x^7
(x-4)(x+4) - x(x-2) = x^2 - 16 - x^2 + 2x = 2x - 16 = 02x = 16x = 8
(x+5) / (x^2 + 5x) = (x+5) / (x(x+5)) = 1 / x
x + y = 55x + 3y = 15
x = 5 - y5(5-y) + 3y = 1525 - 5y + 3y = 15-2y = -10y = 5
x = 5 - yx = 5 - 5x = 0
Ответ: x = 0, y = 5.
(x^6)^3 / (x(x^5)^2) = x^18 / (x(x^10)) = x^18 / (x^11) = x^7
(x-4)(x+4) - x(x-2) = x^2 - 16 - x^2 + 2x = 2x - 16 = 0
2x = 16
x = 8
(x+5) / (x^2 + 5x) = (x+5) / (x(x+5)) = 1 / x
x + y = 5
5x + 3y = 15
x = 5 - y
5(5-y) + 3y = 15
25 - 5y + 3y = 15
-2y = -10
y = 5
x = 5 - y
x = 5 - 5
x = 0
Ответ: x = 0, y = 5.