Question

What can multiply to negative 100 and add to give me negative 21

Answer 1

first factor 100
100=2 times 2 times 5 times 5
gropu factors and make one negative and add them then make that number negatvie


2 and 50
50-2=48
not 21

4 and 25
25-4=21
the numbers are -25 and 4