The factor pairs of 210 are (210,1)(105,2)(70,3)(42,5)(35,6)(30,7)(21,10)(15,14)
None of them add up to 23. If that was -210, you could use 30 and -7.
199
5 and -3
3 and -5.
-29
4 and 7
221
-209
The numbers are: 21 and -10
The numbers that multiply to make 84 and add to make 5 are 12 and -7. When you multiply 12 by -7, you get 84, and when you add them together, 12 + (-7) equals 5. Thus, the solution is 12 and -7.
-22
The numbers are: -5 and 3
199
-5 and +3
That depends whether you want to add the numbers, to multiply them, or what.
The two numbers that multiply to -15 and add up to 2 are 5 and -3. When you multiply 5 and -3, you get -15, and when you add them together, you get 2.
The two numbers that add to -11 and multiply to 19 are -10 and -1. When you add them together, -10 + (-1) equals -11. When you multiply them, -10 × -1 equals 10, not 19. Therefore, there are no two real numbers that satisfy both conditions simultaneously.
5 and -3