What times what equals 12 but when you add those numbers together it equals 3

So, we can write it like this:

x+y=3
x*y=12
from the first we know that
x+y=3
y=3-x

so:

x*y=12 can be written as:
x*(x-3)=12

so x^2-3x=12

Actually this equation does not have a solution within the real numbers

but we can calculate:

x^2-3x-12=0

and if we use the quadratic formula, we will have:

(remember the quadratic formula is the following, where for us a=1,b=-3 and c=-12)




So this would be the solution, where the other number would be


The other solution would be the following one;

x=, y=