Question

решите графически уравнение х+3=-4/х

Answer 1

Ответ:

x + 3 = -4/ x

4 = x2 - 3x

x2 - 3x - 4 = 0

D = 9 - 4 × 1 × ( -4 ) = 9 + 16 = 25

x1 = 3 -5 / 2 = -1

x2 = 3+5/2 = 4

x1 = -1

x2 = 4