А) (x - 1)/(x - 3) = 0 при х = 1
б) (y + 5)/(y(y - 12)) = 0 при y = -5
в) (z^2 - 4)/(z(z+4)(z+7)) = 0 при z = -2 и при z = 2
г) x/2 = 0 при х = 0
(x - 4)(x + 2)(x + 8)(x + 14) = 1204
x² - 4x + 2x - 8 (x + 8)(x + 14) = 1204
x³ - 4x² + 2x² - 8x + 8x² - 32x + 16x - 64 (x + 14) = 1204
x^4 - 4x³ + 2x³ - 8x² + 8x³ - 32x² + 16x² - 64x + 14x³ - 56x² + 28x² - 112x + 112x² - 448x + 224x - 896 = 1204
x^4 + 20x³ + 44x² - 400x - 896 = 1204
x^4 + 20x³ + 44x² - 400x = 1204 + 896
x^4 + 20x³ + 44x² - 400x = 2100
А<em />^-1
................