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If p(x) = 5x³ − 8x² + 13x − 21, what is the coefficient of x² in p(x)?यदि p(x) = 5x³ − 8x² + 13x − 21 है, तो p(x) में x² का गुणांक क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: −8−8
The term containing x² is −8x², so its coefficient is −8. The number 13 is the coefficient of x, while −21 is the constant term. In an exam, always include the positive or negative sign when writing a coefficient.x² वाला पद −8x² है, इसलिए x² का गुणांक −8 होगा। 13, x का गुणांक है, जबकि −21 अचर पद है। परीक्षा में गुणांक लिखते समय उसका धनात्मक या ऋणात्मक चिह्न अवश्य शामिल करें।
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