Hello,

In a quadratic equation , m is the sum of the roots, and n is the product of the roots.

So from the second equation, we have (1). And (2)

And from the first one, we have (3) and (4)

From (4), we get c=0

Substituting in (3), we get b=0

Substituting in (1), we get d=0

Then, a can take any values you want...