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If (\alpha,\beta) are roots of (8x^2-31x+15=0), what is (\alpha+\beta)?यदि (\alpha,\beta) समीकरण (8x^2-31x+15=0) के मूल हैं, तो (\alpha+\beta) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ( \frac{31}{8}) / (\frac{31}{8})( \frac{31}{8}) / (\frac{31}{8})
The sum of roots is (-\frac{b}{a}=-\frac{-31}{8}=\frac{31}{8}). In exams, keep the sign of (b) carefully.मूलों का योग (-\frac{b}{a}=-\frac{-31}{8}=\frac{31}{8}) है। परीक्षा में (b) का चिन्ह ध्यान से रखें।
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