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Question 1 sur 10 10:00

[{"id":52471,"question":"Quelle est la solution de l'équation 3x - 5 = 10 ?","option_a":"x = 5","option_b":"x = 15\/3","option_c":"x = 15","option_d":"x = 5\/3","option_e":"","option_f":"","bonne_reponse":"C","explication":"Pour résoudre 3x - 5 = 10, on ajoute 5 des deux côtés : 3x = 15, puis on divise par 3 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52472,"question":"L'inégalité 2x + 3 \u003E 7 a pour solution :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La solution est x \u003E 2, car 2x + 3 \u003E 7 → 2x \u003E 4 → x \u003E 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52473,"question":"Quelle est la forme développée de (x + 2)(x - 3) ?","option_a":"x² - x - 6","option_b":"x² + x - 6","option_c":"x² - 6x + 6","option_d":"x² - x + 6","option_e":"","option_f":"","bonne_reponse":"A","explication":"En développant, on obtient x² - 3x + 2x - 6 = x² - x - 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52474,"question":"Si x est un nombre réel, alors x² est toujours positif. Vrai ou Faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"x² est toujours positif ou nul, car un carré ne peut pas être négatif.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52475,"question":"Quelle est la solution de l'inéquation 4x - 8 ≤ 0 ?","option_a":"x ≤ 2","option_b":"x ≥ 2","option_c":"x = 2","option_d":"x \u003C 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"4x - 8 ≤ 0 → 4x ≤ 8 → x ≤ 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52476,"question":"La représentation graphique de y = 2x + 1 est une droite de pente :","option_a":"1","option_b":"2","option_c":"-1","option_d":"0.5","option_e":"","option_f":"","bonne_reponse":"B","explication":"Dans l'équation y = mx + b, m représente la pente. Ici, m = 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52477,"question":"Si 3x + 2 = 2x + 5, alors x est égal à :","option_a":"x = 3","option_b":"x = 7","option_c":"x = -3","option_d":"x = 1","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x + 2 = 2x + 5 → 3x - 2x = 5 - 2 → x = 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52478,"question":"L'expression 5(x - 2) + 3 est égale à :","option_a":"5x - 7","option_b":"5x - 10 + 3","option_c":"5x - 13","option_d":"5x - 7","option_e":"","option_f":"","bonne_reponse":"B","explication":"En développant, on obtient 5x - 10 + 3 = 5x - 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52479,"question":"Pour x = -1, l'expression x² + 3x + 2 vaut :","option_a":"0","option_b":"2","option_c":"-2","option_d":"4","option_e":"","option_f":"","bonne_reponse":"A","explication":"(-1)² + 3*(-1) + 2 = 1 - 3 + 2 = 0.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52480,"question":"L'équation x² = 9 a pour solutions :","option_a":"x = 3","option_b":"x = -3","option_c":"x = 3 et x = -3","option_d":"x = 0","option_e":"","option_f":"","bonne_reponse":"C","explication":"x² = 9 → x = √9 ou x = -√9 → x = 3 ou x = -3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]