What factors into -900 but then adds up to equal -11?

Answer 1

-95

Answer 2

-19

Answer 3

-911

Answer 4

7

Answer 5

0.5*[-5 - i*sqrt(23)] and 0.5*[-5 + i*sqrt(23)]

that is

-2.5 - 2.39792*i and -2.5 + 2.39792*i

where i is the imaginary square root of -1.

Answer 6

The factor pairs of -90 are (90, -1) (45, -2) (30, -3) (18, -5) (15, -6) (10, -9) (9, -10) (6, -15) (5, -18) (3, -30) (2, -45) (1, -90)

None of them add up to -5.

Answer 7

They are 25 and -36

Answer 8

1, 1, 1, 6 and -4 is one set of numbers.