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Question: Problem with document mode

Question:Problem with document mode

peacess 10 Maple 2015
document
January 29 2016
1

Hello everyone,

I'm new at maple.Sorry if this question asked before me, but i couldnt find it.

As i said i am new

so when I open new document (mode) at maple2015 i can do basic calculations for instance additon substraction multipicitaions. But when i want the  calculate x^2+5-3 and enter it supposed to be say to me blue line as a answer. But maple says nothing.

is there any point that i missing? 

Thank you very much all you in advance.
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