Question

(x - 1 ) ao quadrado -X = 1

Answer 1

(x-1)²-x= 1

(x-1)(x-1)-x=1

x²-1x-1x+1-x=1

x²-2x +1-x=1

x²-3x+1-1=0

x²-3x=0

x(x-3)=0

x1= 0
x2= 3