15
The two numbers that multiply to -140 and add up to -8 are 7 and -20. When you multiply them, 7 × -20 equals -140, and when you add them, 7 + (-20) equals -8.
-13
-23
15
161
The numbers are 3 and 4
-1
-17
The two numbers that add up to -6 and multiply to -7 are -1 and 7. This is because -1 + 7 = -6 and -1 * 7 = -7. These numbers satisfy both conditions given in the question.
7 & 3
301
-1