Question

X2+3x+2=0 qual a resposta?

Answer 1

X2 +3x +2=0

(x+2)(x+1)=0

x+2=0. x+1=0

x=-2. x=-1

s= (-2,-1)

Answer 2

S = {-2,-1}

A=1

B=3

C=2

∆= b²-4.a.c

∆= 3²-4.1.2

∆=9-8

∆=1

(-b± √∆)/2.a=

-3±1/2=

S={-2,-1}