Question

inequaçoes : 1 ano X2 +2x - 3 > 0?

Answer 1

x^2+2x-3>0
x^2+2x-3=0
delta=b^2-4.a.c
delta=2^2-4.1.(-3)
delta=4+12
delta=16
x=-b-/+ raiz de delta/2a
x=-2-4/2.1
x=-6/2
x=-3
x=-2+4/2.1
x=2/2
x=1