Question

What mutiplies to give
you 21 and adds to give you 5

Answer 1

If it was negative 21, then 7 and -3.
Otherwise, it'd have to be some sort of decimal?

Answer 2

There are no such numbers...thus this parabola needs to be solved using the quadratic formula. :D

Have a good day!

Or rather the problem has been changed....

answer is (m+5)(4m+1)