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निम्नलिखित व्यंजक के गुणनखंड कीजिए: q2 − 10q + 21 - Mathematics (गणित)

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Question

निम्नलिखित व्यंजक के गुणनखंड कीजिए:

q2 − 10q + 21

Sum

Solution

q2 − 10q + 21

21 = (−7) × (−3) और (−7) + (−3) = − 10

∴ q2 − 10q + 21

= q2 − 7q − 3q + 21

= q (q − 7) − 3 (q − 7)

= (q − 7) (q − 3)

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सर्वसमिकाओं के प्रयोग द्वारा गुणनखंडन
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Chapter 14: गुणनखंडन - प्रश्नावली 14.2 [Page 232]

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NCERT Mathematics [Hindi] Class 8
Chapter 14 गुणनखंडन
प्रश्नावली 14.2 | Q 5. (ii) | Page 232
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