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 <question type="category"><category><text>1rBTX 04. FUNCIONS/1.4.4 Exponencial i logaritme/1.4.4.0 Potències</text></category></question>
 
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      <text>1.4.4.0.50DT PROPIETATS POTÈNCIES</text>
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      <text><![CDATA[<table style="background-image: url('http://lcmates.eu/none'); color: #006600; border: 4px solid #003300; float: none; text-align: left; vertical-align: top; margin-left: auto; margin-right: auto; background-color: #ffffcc; width: 400px; height: 110px;" border="4" frame="void" rules="none">
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