4 + 2i*sqrt(5) and 4 - 2i*sqrt(5)
[where i is the square root of -1]
Given a+b=8, we have b=8-a.
Given ab = 36, we can substitute b=8-a to get a(8-a) = 36, or
a2 - 8a + 36 = 0
Using the quadratic formula gives the two possible answers, which accounts for the fact that a and b can be switched without affecting the problem.
The two numbers that add to 38 and multiply to give 72 are 36 and 2. When you add them together, 36 + 2 equals 38, and when you multiply them, 36 × 2 equals 72.
736
56
46
24
The two numbers that add to get negative 36 and multiply to get negative 144 are -48 and 12. When you add them, -48 + 12 equals -36, and when you multiply them, -48 × 12 equals -144.
The two numbers are... -36 and -36
The two numbers that multiply to 36 and add up to 15 are 9 and 4. When you multiply 9 and 4, you get 36, and when you add them together, you get 15. Therefore, the answer is 9 and 4.
36
The two numbers that add up to -36 and multiply to 324 are -18 and -18. This is because -18 + -18 equals -36, and -18 * -18 equals 324.
57
-20