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<div> <table style="background-color: #ffffcc; border-color: #003300; border-width: 4px; ; width: 400px;" border="4" align="center"> <tbody> <tr> <td style="background-color: #003300;" align="center"><span style="font-size: large; color: #ffff99;">Arrel i exponent fraccionari</span></td> </tr> <tr> <td> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>L'arrel n-èsima d'un nombre es defineix així:</strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mroot mathcolor=¨#003300¨»«mi mathvariant=¨bold¨»x«/mi»«mi mathvariant=¨bold¨»n«/mi»«/mroot»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»y«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8660;«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»x«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«msup mathcolor=¨#003300¨»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»y«/mi»«mi mathvariant=¨bold¨»n«/mi»«/msup»«/math»</strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>Qualsevol arrel es pot escriure com un exponent fraccionari</strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>i viceversa:</strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mroot mathcolor=¨#003300¨»«msup»«mn mathvariant=¨bold¨»3«/mn»«mn mathvariant=¨bold¨»5«/mn»«/msup»«mn mathvariant=¨bold¨»7«/mn»«/mroot»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«msup mathcolor=¨#003300¨»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»3«/mn»«mfrac bevelled=¨true¨»«mn mathvariant=¨bold¨»5«/mn»«mn mathvariant=¨bold¨»7«/mn»«/mfrac»«/msup»«/math»</strong></span></p> </td> </tr> </tbody> </table> </div>
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