Question

Rozwiąż równanie : -x³-x²+4x+4=0

Answer 1

 -x³-x²+4x+4=0     /*(-1)

x³ + x² - 4x - 4 = 0

x²(x + 1) - 4(x +1) = 0

(x + 1)(x² - 4) = 0

x + 1 = 0     lub   x² - 4 = 0

x = -1                  x² = 4

                          x = 2   lub  x = -2