Question

determine o valor numérico dessa expresao algébrica x²+3x+2

Answer 1

X²+3X+2=0

a=1
b=3
c=2

Δ= b²-4ac
Δ=3²-4.1.2
Δ=9-8
Δ=1

x=-b+/-√Δ
x=-3+/-√1
x=-3+/-(1)

x1=-3+1= -2
x2=-3-1=-4

s= (-4;-2)

Espero ter ajudado :D