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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;">Racionalitzar 4</span></td> </tr> <tr> <td style="text-align: center;"> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>Racionalitzar és eliminar les arrels del denominador.</strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>Si hi ha una suma o una diferència d'arrels al denominador, es multiplica el numerador i el denominador pel <span style="color: #0000ff;">conjugat</span> per aplicar </strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>(a+b)(a-b)=<span style="color: #993366;">a<sup>2</sup>-b<sup>2</sup></span></strong></span></p> <p style="text-align: center;"><span style="color: #003300; font-size: small;"><strong>Si hi ha arrels al numerador:</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¨»«mfrac»«mrow»«mn»2«/mn»«mo»+«/mo»«msqrt»«mn»5«/mn»«/msqrt»«/mrow»«mrow»«msqrt»«mn»5«/mn»«/msqrt»«mo»+«/mo»«msqrt»«mn»3«/mn»«/msqrt»«/mrow»«/mfrac»«mo»=«/mo»«mfrac»«mrow»«mfenced mathcolor=¨#191919¨»«mrow»«mn»2«/mn»«mo»+«/mo»«msqrt»«mn»5«/mn»«/msqrt»«/mrow»«/mfenced»«mo mathvariant=¨bold¨ mathcolor=¨#0000FF¨»§#183;«/mo»«mfenced mathcolor=¨#0000FF¨»«mrow»«msqrt»«mn mathvariant=¨bold¨»5«/mn»«/msqrt»«mo mathvariant=¨bold¨»-«/mo»«msqrt»«mn mathvariant=¨bold¨»3«/mn»«/msqrt»«/mrow»«/mfenced»«/mrow»«mrow»«mfenced»«mrow»«msqrt»«mn»5«/mn»«/msqrt»«mo»+«/mo»«msqrt»«mn»3«/mn»«/msqrt»«/mrow»«/mfenced»«mo mathvariant=¨bold¨ mathcolor=¨#0000FF¨»§#183;«/mo»«mfenced mathcolor=¨#0000FF¨»«mrow»«msqrt»«mn mathvariant=¨bold¨»5«/mn»«/msqrt»«mo mathvariant=¨bold¨»-«/mo»«msqrt»«mn mathvariant=¨bold¨»3«/mn»«/msqrt»«/mrow»«/mfenced»«/mrow»«/mfrac»«mo»=«/mo»«mfrac»«mrow»«mn»5«/mn»«mo»-«/mo»«mn»2«/mn»«msqrt»«mn»3«/mn»«/msqrt»«mo»+«/mo»«mn»2«/mn»«msqrt»«mn»5«/mn»«/msqrt»«mo»-«/mo»«msqrt»«mn»15«/mn»«/msqrt»«/mrow»«mrow»«mn mathcolor=¨#7F0000¨»5«/mn»«mo mathcolor=¨#7F0000¨»-«/mo»«mn mathcolor=¨#7F0000¨»3«/mn»«/mrow»«/mfrac»«mspace linebreak=¨newline¨/»«mo»=«/mo»«mfrac»«mrow»«mn»5«/mn»«mo»-«/mo»«mn»2«/mn»«msqrt»«mn»3«/mn»«/msqrt»«mo»+«/mo»«mn»2«/mn»«msqrt»«mn»5«/mn»«/msqrt»«mo»-«/mo»«msqrt»«mn»15«/mn»«/msqrt»«/mrow»«mn»2«/mn»«/mfrac»«/math»</strong></span></p> <strong><span style="font-size: small;">i es <span style="text-decoration: underline;"><span style="color: #ff0000; text-decoration: underline;">simplifica</span></span></span></strong></td> </tr> </tbody> </table> </div>
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