What can be multiplied to get -16 and add up to get -14

So
assuming you mean what 2 number multiply to get -16 and add to get -14
xy=-16
x+y=-14
subtract x
y=-14-x
subsitute -14-x for y
x(-14-x)=-16
-14x-x^2=-16
add 14x to both sides
-x^2=14x-16
add x^2 to both sides
x^2+14x-16=0
use quadratic formula

formula is used to solve for x when you have ax^2+bx+c so if  you have them then you subsitute them into this equation: or

so
a=1
b=14
c=-16
if you subsitute you will get
-15.062257748299 and 1.0622577482985
really close