Question

Determine z ∈ C, tal que z² - 2z= -1+1

Answer 1

Boa noite

z² -2z = -1 +1
z² -2z = 0

Bhaskará:

z = -b ±√b² -4.a.c / 2a

z = 2 ±√(-2)² -4.1.0 / 2

z = 2 ± √4 / 2

z = 2 ± 2 / 2

z' = 4/2 = 2
z'' = 0/2 = 0


Bons estudos ;)