state gov DDA Junior Secretariat Assistant (JSA) Mock Test 2023 Quantitative Aptitude Algebra Polynomials

​द्विघात समीकरण x2 + kx + 42 = 0 के मूल a और b इस प्रकार है कि a – b = 1 है, तो k का मान क्या है?

1
±14
2
±12
3
±9
4
±13
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