One thing before we start :)
AS you can see both numbers after equation have to be negative,
also we know that 2 same numbers have to add up to -12 and those 2 number after multiplication have to be equal -28
Some theory:
We know that any number which is not negative multiplied by negative will result in negative result, to make it more clear
\((+)*(-)=(-)\)
but
\((-)*(-)=(+)\)
we have 2 unknown numbers, let's say it's \(x\) and \(y\)
\(x+y=-12\)
\(x*y=-28\)
for \(x=2\)
for \(y=-14\)
\(2+(-14)=2-14=-12\)
\((2)*(-14)=-28\)
So your answer is 2 and -14 ;)