-24
-21, 27
-22
-9.22043 and 18.22043 (to 5 dp).
-17
The two numbers that multiply together to equal 48 and add together to equal 19 are 12 and 4. When multiplied, 12 × 4 equals 48, and when added, 12 + 4 equals 16. Since these numbers do not satisfy both conditions, the correct pair is actually 16 and 3. They multiply to 48 and add up to 19.
20
-17
-30
-127
-936
-117
17
-21, 27
22
137
-43
-28