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Test-Lidia
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<p>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«mo»=«/mo»«mfrac»«mn»1«/mn»«mn»2«/mn»«/mfrac»«/math» è soluzione dell'equazione «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«mfenced»«mrow»«mn»2«/mn»«mi»x«/mi»«mo»-«/mo»«mn»1«/mn»«/mrow»«/mfenced»«mfenced»«mrow»«mi»x«/mi»«mo»+«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mo»=«/mo»«mn»0«/mn»«/math»</p>
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<p>Un certo valore è soluzione se, sostituito al posto della x rende l'equazione una identità (0=0 oppure 5=5 oppure 4-1=3 ect.)</p>
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Feedback for the response 'True'.
<p>Sostituendo il valore dato al posto della x si ottiene una identità infatti «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfrac»«mn»1«/mn»«mn»2«/mn»«/mfrac»«mfenced mathcolor=¨#0000FF¨»«mrow»«mn mathvariant=¨bold¨»2«/mn»«mfrac»«mn mathvariant=¨bold¨»1«/mn»«mn mathvariant=¨bold¨»2«/mn»«/mfrac»«mo mathvariant=¨bold¨»-«/mo»«mn mathvariant=¨bold¨»1«/mn»«/mrow»«/mfenced»«mfenced»«mrow»«mfrac»«mn»1«/mn»«mn»2«/mn»«/mfrac»«mo»+«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mo»=«/mo»«mn»0«/mn»«/math» è vero.</p>
Feedback for the response 'False'.
<p>Sostituendo il valore dato al posto della x si ottiene «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfrac»«mn»1«/mn»«mn»2«/mn»«/mfrac»«mfenced mathcolor=¨#0000FF¨»«mrow»«mn mathvariant=¨bold¨»2«/mn»«mfrac»«mn mathvariant=¨bold¨»1«/mn»«mn mathvariant=¨bold¨»2«/mn»«/mfrac»«mo mathvariant=¨bold¨»-«/mo»«mn mathvariant=¨bold¨»1«/mn»«/mrow»«/mfenced»«mfenced»«mrow»«mfrac»«mn»1«/mn»«mn»2«/mn»«/mfrac»«mo»+«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mo»=«/mo»«mn»0«/mn»«/math» che è vero.</p>
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Wednesday, 26 October 2016, 9:53 AM
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