Question

fatore o trinomio e resolva as equações x² - 2x + 1 = 4​

Answer 1

x² - 2x + 1 = 4

(x-1)² = 4

(x-1) = √4

(x-1) = ±2 ↓

x-1 = +2 ==> x' = 2+1 = 3

x-1 = -2 ==> x"= -2+1= -1