Question

X²+4x+3=0 (EQUAÇÃO DE 2 GRAU)

Answer 1

x²+4x+3=0

a=1
b=4
c=3
___________
/\=b²-4.a.c
x= -b+-V/\÷2.a
___________

/\=4²-4.1.3
/\=16-12
/\=4

x'= -4+2÷2
x'= -2÷2
x'= -1

x"= -4-2÷2
x"= -6÷2
x"= -3

S={-1,-3}

Answer 2

X²+4x+3=0
A=1
B=4
C=3 

Δ= B²-4.a.c
Δ= 4²- 4.1.3
Δ= 16-12
Δ= 4 

X= - b +/- √¯Δ /2.a

X= -4+/- √¯4 /2.1

X= -4 +/- 2 /2 

X'= -4+2 /2 = -2/2 = -1 

X"= -4-2 /2 = -6/2 = -3