Question

(1+x).(x-1) ???Preciso saber quanto da isso urgente (1+x).(x-1)

Answer 1

(1+x)*(x-1)
1x-1+x^2-1x
x^2-1

delta=-4*1*(-1)
=4
x1=0+2/2=1
x2=0-2/2=-1