Sumer was an urban civilization which was historically named as the first in the region of southern Mesopotamia, which is modernly called southern Iraq. This was a wealthy civilization composed of merchants of different metals and other stuffs. One thing they were not importing was iron metal.
Answer from: Quest
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step-by-step explanation:
Answer from: Quest
answer: -2+√x,-2-√x
i hope this , i don't know if you're looking for a pair or not.