Question

determine, se existir as raízes reais da função f(x) = x² - 2x + 1

Answer 1

∆=B^2 -4 . a . c
∆= -2^2 -4 . 1 . 1
∆=4 -4
∆=0

x= - b -√∆ x= - ( -2) - √0
2.a. 2.1

x= 2 -0. x=2. x= 1
2. 2

x= 2+0. x=2. x=1
2. 2