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<div align="left"> </div> <div style="text-align: center;" align="center"> <table style="color: #000066; border: 4px solid #000066; float: none; text-align: left; vertical-align: top; width: 400px; background-image: none; background-color: #ffffcc;" border="4" frame="void" rules="none" align="center"> <tbody align="center"> <tr> <td style="background-color: #000066; background-image: none; color: #ffcc00; border-color: #000066; border-width: 4px; vertical-align: top; border-style: solid; text-align: center;" valign="top" width="100%"><span style="font-size: large; color: #ffff99;" data-mce-mark="1">Equació incompleta I: ax<sup>2</sup>+c=0</span></td> </tr> <tr> <td valign="top" width="100%"> <p style="text-align: justify;"><span style="color: #000080;"><strong><span style="font-size: small;" data-mce-mark="1">Es resol com una equació de 1r grau: </span></strong></span></p> <ul> <li style="text-align: justify;"><span style="color: #000080;"><strong><span style="font-size: small;" data-mce-mark="1">traslladant els nombres a la dreta, sumant o restant</span></strong></span></li> <li style="text-align: left;"><span style="color: #000080;"><strong><span style="font-size: small;">dividint pel coeficient de x<sup>2</sup>.</span></strong></span><strong><span style="font-size: small;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mn»2«/mn»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»-«/mo»«mn»50«/mn»«mo»§#160;«/mo»«mo»=«/mo»«mo»§#160;«/mo»«mn»0«/mn»«mo»§#8660;«/mo»«mn»2«/mn»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»=«/mo»«mn»50«/mn»«mo»§#8660;«/mo»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»=«/mo»«mn»25«/mn»«/math»</span></strong></li> </ul> <p style="text-align: justify;"><span style="font-size: small; color: #000080;"><strong><span style="font-size: small; color: #000080;">Després si és possible, es calculen les arrels positiva i negativa del membre de la dreta:</span></strong></span></p> <div style="text-align: center;"> <div><span style="color: #000080;" data-mce-mark="1"><span style="color: #000080;" data-mce-mark="1">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»=«/mo»«mn»25«/mn»«mo»§#8660;«/mo»«mi»x«/mi»«mo»=«/mo»«mo»§#177;«/mo»«msqrt»«mn»25«/mn»«/msqrt»«mo»§#8660;«/mo»«mi»x«/mi»«mo»=«/mo»«mo»§#177;«/mo»«mn»5«/mn»«/math».<br /></span></span></div> <div><span style="font-size: small; color: #ff0000;"><strong><span data-mce-mark="1"><span data-mce-mark="1">Si a·c < 0, té dues solucions oposades. </span></span></strong></span></div> <div><span style="font-size: small; color: #ff0000;"><strong><span data-mce-mark="1"><span data-mce-mark="1">Si a·c > 0, no té solució.</span></span></strong></span></div> </div> </td> </tr> </tbody> </table> </div> <div align="left"> </div>
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Tuesday, 14 July 2015, 9:22 AM
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