// Numbas version: finer_feedback_settings
{"name": "Pregunta 5: Ecuaciones de Segundo Grado", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Pregunta 5: Ecuaciones de Segundo Grado", "tags": [], "metadata": {"description": "<p>Objetivo: Determina la suma de las soluciones de una ecuaci&oacute;n de segundo grado.</p>", "licence": "None specified"}, "statement": "<p>5)&nbsp;Determine la suma de las ra&iacute;ces de la ecuaci&oacute;n de segundo grado $5x^2-20x+15=0$.</p>\n<p>&nbsp; &nbsp; A) $-4$</p>\n<p>&nbsp; &nbsp; B) $-3$</p>\n<p>&nbsp; &nbsp; C) $3$</p>\n<p>&nbsp; &nbsp; D) $4$</p>\n<p></p>", "advice": "", "rulesets": {}, "extensions": [], "variables": {}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": [], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "gapfill", "useCustomName": true, "customName": "Desarrollo", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>Para determinar la suma de las soluciones de una ecuaci&oacute;n de segundo grado de la forma $ax^2+bx+c=0$, debemos resolver la expresi&oacute;n $x_1+x_2= - \\Large \\frac{b}{a}$.</p>\n<p>Primero determinemos para la ecuaci&oacute;n $5x^2-20x+15=0$ los valores&nbsp; de $a$ y $b$, los cuales son $a=$[[0]]&nbsp; y $b=$[[1]].</p>\n<p>Ahora reemplazamos en la expresi&oacute;n&nbsp;$x= - \\Large \\frac{b}{a}$ obteniendo:</p>\n<p style=\"text-align: center;\">$x_1+x_2= - \\Large \\frac{b}{a}$.</p>\n<p style=\"text-align: center;\">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[2]] &nbsp; &nbsp; &nbsp;</p>\n<p style=\"text-align: center;\">$x_1+x_2= -$ _______&nbsp;</p>\n<p style=\"text-align: center;\">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[3]]&nbsp;</p>\n<p style=\"text-align: center;\">$x_1+x_2=$[[4]]</p>\n<p style=\"text-align: left;\">La respuesta correcta es la alternativa:&nbsp;[[5]]</p>", "gaps": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": "0.2", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "minValue": "5", "maxValue": "5", "correctAnswerFraction": false, "allowFractions": false, 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true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "minValue": "-20", "maxValue": "-20", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "showFractionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}, {"type": "numberentry", "useCustomName": false, "customName": "", "marks": "0.2", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "minValue": "5", "maxValue": "5", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, 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