का मूल ज्ञात कीजिए।

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 1)
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  1. और 1
  2. - और -4
  3. - और -1
  4. - और 4

Answer (Detailed Solution Below)

Option 3 : - और -1
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RRB NTPC Graduate Level Full Test - 01
100 Qs. 100 Marks 90 Mins

Detailed Solution

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दिया गया है:

द्विघात समीकरण 4m2 + 6m + 2 = 0 है

प्रयुक्त सूत्र:

द्विघात समीकरण ax2 + bx + c = 0 के मूल ज्ञात करने के लिए, द्विघात सूत्र का उपयोग करें:

m =

जहाँ:

a = m2 का गुणांक, b = m का गुणांक, c = अचर पद

गणना:

यहाँ, a = 4, b = 6, c = 2

⇒ m =

⇒ m =

⇒ m =

⇒ m =

स्थिति 1: m =

स्थिति 2: m =

∴ समीकरण के मूल -1/2 और -1 हैं। सही उत्तर विकल्प (3) है।

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