Answer:
8√10
Step-by-step explanation:
√640 = √64*10 = √8²*10 = 8√10
25 (simplified)
the full answer is 25.2982
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21
it is 2013.97849462
Step-by-step explanation: hope this helps :)
there is none
This is subtraction:
9,000-4,536=4,464