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<div align="left"> </div> <div style="text-align: center;" align="center"> <table style="color: #000066; border: 4px solid #003300; 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: #003300; 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: #ffffc3;" data-mce-mark="1">Equació incompleta: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨20px¨»«msup mathcolor=¨#FFFFC3¨»«mi mathcolor=¨#FFFFC3¨»ax«/mi»«mn»2«/mn»«/msup»«mo mathcolor=¨#FFFFC3¨»+«/mo»«mi mathvariant=¨normal¨ mathcolor=¨#FFFFC3¨»c«/mi»«mo mathcolor=¨#FFFFC3¨»=«/mo»«mn mathcolor=¨#FFFFC3¨»0«/mn»«/mstyle»«/math» <br /></span></td> </tr> <tr> <td valign="top" width="100%"> <p style="text-align: justify;"><span style="color: #003300;"><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: #003300;"><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: #003300;"><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¨»«mstyle mathsize=¨14px¨»«mrow»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»2«/mn»«msup mathcolor=¨#003300¨»«mi mathvariant=¨bold-italic¨ mathcolor=¨#003300¨»x«/mi»«mn mathvariant=¨bold¨»2«/mn»«/msup»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»-«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»50«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»0«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8660;«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»2«/mn»«msup mathcolor=¨#003300¨»«mi mathvariant=¨bold-italic¨ mathcolor=¨#003300¨»x«/mi»«mn mathvariant=¨bold¨»2«/mn»«/msup»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»50«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8660;«/mo»«msup mathcolor=¨#003300¨»«mi mathvariant=¨bold-italic¨ mathcolor=¨#003300¨»x«/mi»«mn mathvariant=¨bold¨»2«/mn»«/msup»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»25«/mn»«/mrow»«/mstyle»«/math»</span></strong></li> </ul> <p style="text-align: justify;"><span style="font-size: small; color: #003300;"><strong><span style="font-size: small;">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¨»«mstyle mathsize=¨14px¨»«mrow»«msup mathcolor=¨#003300¨»«mi mathvariant=¨bold-italic¨ mathcolor=¨#003300¨»x«/mi»«mn mathvariant=¨bold¨»2«/mn»«/msup»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»25«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8660;«/mo»«mi mathvariant=¨bold-italic¨ mathcolor=¨#003300¨»x«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#177;«/mo»«msqrt mathcolor=¨#003300¨»«mn mathvariant=¨bold¨»25«/mn»«/msqrt»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#8660;«/mo»«mi mathvariant=¨bold-italic¨ mathcolor=¨#003300¨»x«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#177;«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#003300¨»5«/mn»«/mrow»«/mstyle»«/math».<br /></span></span></div> <div style="text-align: left;"><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 style="text-align: left;"><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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