Question 1203982
Multiply to result in 3:
-1 & -3
1 & 3


Add the two numbers to result in -4:
Only ONE of those simple choices works.
-1 and -3.


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If desired:

two numbers x and -4-x.

{{{x(-4-x)=3}}}
{{{-x^2-4x=3}}}
{{{-x^2-4x-3=0}}}
{{{x^2+4x+3=0}}}
{{{(x+1)(x+3)=0}}}
{{{system(x=-1,or,x=-3)}}}
.
.
but the two numbers will be  -1 and -3.