Question

1-resolva
a-x ao quadrado +2x-3=0

Answer 1

Olá boa tarde

a=1
b=2
c=-3

Delta= b2-4.a.c
Delta=4+12
Delta=16

X= -b +\- 4 (raiz de 16)

X1= -2+(-4)
X1= - 6

X2= -2-(-4)
X2=-2+4
X2= + 2

S={-6,+2}