jfgjj7kfkg: what numbers multiply to get negative 112 but add to get positive 24
28 and -4,
You can derive this from the following two equations;
xy = -112
x + y = 24
the second equation gives x = 24-y.
Filling x = 24-y in in the first equation gives;
x(24-y) = -112 which can we rewritten to the quadratic expression
x
2+24x-112 = 0
Then by applying the quadratic formula we get;
Knipsel18.PNG
Knipsel19.PNG
Reinout
+2353 
