30
The factor pairs of -12 are (-12,1)(-6,2)(-4,3)(12,-1)(6,-2)(4,-3)
None of them add up to -18
* * * * *
The question did not specifically ask for "factors". The two numbers are
0.6437 and -18.6437 (approx). Exact values are -9+sqrt(93) and -9-sqrt(93).
They are: -5 and 4
the correct answer
43
82
23
They are: -5 and 4
120
the correct answer
43
66
82
23
29
19
22
21
The two numbers -9 + √89 (≈ 0.434) and -9 - √89 (≈ -18.434)