Question

equação do 2 grau:
(1-x) - (x+1) = (x2+1) - (1-x)

Answer 1

(1-x) - (x+1)=(x^2+1) - (1-x)
1-x-x-1=x^2+1-1+x
-2x=x^2+x
x^2+3x=0 
-b+-Vb^2-4ac/2a
-3+-V3^2-4.1.0/2.1
-3+-3/2= 
x´= -3-3/2 = -3 
x´= -3+3/2 = 0/2 = 0