<![CDATA[This research aims to investigate the correlation between self-efficacy and intrinsic motivation with students' ability to solve quadratic equation story problems among ninth-grade students at SMPN 2 Salatiga. A quantitative approach with a correlational method was employed, involving 29 students from class IX A as participants. Data were collected using problem-solving tests and questionnaires designed to assess self-efficacy and intrinsic motivation. The data were analyzed through Pearson Product Moment correlation and multiple regression techniques. The findings reveal: (1) a moderate and statistically significant positive relationship between self-efficacy and problem-solving performance (r = 0.578); (2) a similarly moderate and significant correlation between intrinsic motivation and problemsolving skills (r = 0.488); and (3) a joint, significant relationship between self-efficacy, intrinsic motivation, and students"™ problemsolving ability in quadratic equation contexts. The regression analysis indicated that both independent variables significantly contribute to predicting students"™ performance, with an R Square value of 0.361, meaning that 36.1% of the variation in problem-solving ability could be explained by these two psychological factors. These results underscore the critical role of self-efficacy and intrinsic motivation in fostering students"™ mathematical problem-solving success.]]>
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