What adds to give you two and multiplies to give you fifteen?

Answer 1

There are no two real numbers that can do that.

-- If you're into complex numbers, then [ 2 + j 3.7417 ] and [ 2 - j 3.7417 ] will do it.

-- If, as I suspect, the fifteen was actually supposed to be negative fifteen,

then the two numbers -3 and 5 will do it.

(You also didn't say how many numbers are involved, but I just assumed that

it's two of them.)