11
when youre adding negative numbers, you add them and put a negative sign (ex: -6 + -5=-11) when you add negative and positive numbers(ex: -9 + 7) you subtract the numbers and take the sign of the bigger number (9-7=2, so the answer is -2 because the bigger number, 9, is negative when you subtract 2 negative numbers you add them together and put a negative sign when you subtract a neg. number and a pos. number (ex: -8 - 3) you add the numbers but the 3 becomes negative so the problem becomes -8 + -3. the answer is -11
9 and -2
Either a negative or a positive result depending on the values of the numbers as for example -7+9 = 2 but -9+7 = -2
The two numbers -9 + √89 (≈ 0.434) and -9 - √89 (≈ -18.434)
17
-11
If you are adding a positive number, then this is the same as normal addition. For instance, 4 add positive 5 is 9. negative 1 add positive 8 is 7. If you are adding a negative number, then this is the same as subtracting that number. For instance 6 add negative 1 is 5. negative 7 add negative 2 is negative 9.
-5
The numbers that add up to negative 6 and multiply to negative 27 are -3 and 9.
20
There are several pairs of numbers that add up to 9, including (0, 9), (1, 8), (2, 7), (3, 6), (4, 5), and their negative counterparts like (-1, 10) or (-2, 11). Additionally, you can also use three numbers, such as (2, 2, 5) or (1, 1, 7). The combinations can vary depending on how many numbers you want to include.
49