(2x - 5)/x - 3/(x + 3) = (3 - 7x)/(x +3)(3 - x) | *x(x+3)(3-x)
(2x - 5)(x +3)(3 -x) - 3x(3 - x) = x(3 - 7x)
(2x - 5)(9 - x^2) -9x + 3x^2 = 3x - 7x^2
18x - 2x^2 - 45 + 5x^2 - 9x + 3x^2 - 3x + 7x^2 = 0
13x^2 + 6x - 45 = 0
D/4 = 9 + 13 * 45 = 594
VD/4 = V594 = 3 V 66
x1 = ( - 3 - 3V66)/ 13
x2 = ( - 3 + 3V66)/ 13
не уврена что правильно
(2x - 5)/x - 3/(x + 3) = (3 - 7x)/(x +3)(3 - x) | *x(x+3)(3-x)
(2x - 5)(x +3)(3 -x) - 3x(3 - x) = x(3 - 7x)
(2x - 5)(9 - x^2) -9x + 3x^2 = 3x - 7x^2
18x - 2x^2 - 45 + 5x^2 - 9x + 3x^2 - 3x + 7x^2 = 0
13x^2 + 6x - 45 = 0
D/4 = 9 + 13 * 45 = 594
VD/4 = V594 = 3 V 66
x1 = ( - 3 - 3V66)/ 13
x2 = ( - 3 + 3V66)/ 13
не уврена что правильно