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Example of Adding signed numbers:
Example:
(2) + (-4) =
Solution:
Start with 2 and count 4 whole numbers to the left.
Thus: (2) + (-4) = -2
Adding numbers with unlike signs might be accomplished through combining all positive numbers, then all negative numbers, and then subtracting.
Perform the denoted operation for each of the following. (a) Add 6x 5 -10x 2 + x - 45 to 13x 2 - 9 x + 4 . (b) Subtract 5x 3 - 9 x 2 + x - 3 from x 2+ x +1.
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