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 <question type="category"><category><text>4t ESO/4.05 INEQUACIONS/4.05.2 Signe d'una expressió algèbrica</text></category></question>
 
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    <name>
      <text>4.05.2.40 TEORIA: SIGNEPOL G2 TAULA</text>
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      <text><![CDATA[<div style="text-align: center;"><br /><br />
<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="1" frame="void" rules="none" cellspacing="1" cellpadding="1" align="center">
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<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid; background-color: #000066; color: #ffcc00;" rowspan="1" colspan="6" align="center" valign="top" width="NaNpx"><span style="font-size: large; color: #ffff99;">Signe de ax<sup>2</sup> + bx + c</span></td>
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<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" rowspan="1" colspan="6" valign="top" width="NaNpx"><strong>Si no té solució, té el signe de a.<br />Si té solució doble, té el signe de a excepte en x<sub>1</sub>.<br />Si té dues solucions, x<sub>1</sub> i x<sub>2</sub>: </strong></td>
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<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" valign="top" width="NaNpx">x</td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" valign="top" width="NaNpx">.oo</td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid; background-color: #ff0000; color: #ffffff;" valign="top" width="NaNpx"><strong>x<sub>1</sub></strong></td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: right; vertical-align: top; border-style: solid;" align="right" valign="top" width="NaNpx"> </td>
<td style="background-color: #ff0000; background-image: none; color: #ffffff; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;"><strong>x<sub>2</sub></strong></td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: right; vertical-align: top; border-style: solid;">+oo</td>
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<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: left; vertical-align: top; border-style: solid;" valign="top" width="NaNpx">ax<sup>2</sup>+bx+c</td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;" align="center" valign="top" width="NaNpx">Signe de a</td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid; background-color: #ff0000; color: #ffffff;" align="center" valign="top" width="NaNpx"><strong>0</strong></td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;" align="center" valign="top" width="NaNpx">Contrari de a</td>
<td style="background-color: #ff0000; background-image: none; color: #ffffff; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;">0</td>
<td style="background-image: none; border-color: #000066; border-width: 2px; text-align: center; vertical-align: top; border-style: solid;">Signe de a</td>
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      <text></text>
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