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" td="" /></td> <td style="width: 400px;" valign="middle"><span style="color: #000066;" data-mce-mark="1"><strong><span>El quadrat té per costat x.<br />El triangle té per altura x i per base #b.<br /></span><br /><span>Quin és el valor de x si l'àrea de la figura és #a.<br /></span><span><br /></span></strong></span></td> </tr> <tr> <td rowspan="1" colspan="2" valign="top" width="NaNpx"> <div align="center"><strong> </strong></div> </td> </tr> </tbody> </table> <p><span style="color: #000066;"><strong> </strong></span></p>
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Answer 1
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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Answer 2
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
<p><span style="color: #006600; font-weight: bold;">L'àrea del quadrat és x<sup>2</sup>.<br />L'àrea del triangle es calcula amb «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨12px¨»«mrow»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»b«/mi»«mo mathvariant=¨bold¨»§#160;«/mo»«mo mathvariant=¨bold¨»§#183;«/mo»«mo mathvariant=¨bold¨»§#160;«/mo»«mi mathvariant=¨bold¨»x«/mi»«/mrow»«mn mathvariant=¨bold¨»2«/mn»«/mfrac»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»#«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»s«/mi»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»§#160;«/mo»«mi mathvariant=¨bold¨ mathcolor=¨#003300¨»x«/mi»«/mrow»«/mstyle»«/math»<br />L'àrea total és doncs x<sup>2</sup> + #s x<br />I l'equació </span><span style="color: #006600; font-weight: bold;">x<sup>2</sup> + #s x = #a o sigui </span><span style="color: #006600; font-weight: bold;">x<sup>2</sup> + #s x - #a = 0. <br /><span style="font-size: large;"><span style="color: #ff0000;">La solució negativa no és vàlida!!</span></span><br /></span></p>
Hint 2
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