6x2 + 3x2 – 5x + 1

என்ற பல்லுறுப்புக்கோவையின் சுழியாக்கிகளின் மதிப்புகளின் தலைகீழ்களின் கூட்டுத்தொகை என்ன?

This question was previously asked in
RRC Group D Previous Paper 10 (Held On: 28 Sep 2018 Shift 1)
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  4. 5

Answer (Detailed Solution Below)

Option 4 : 5
Free
RRB Group D Full Test 1
100 Qs. 100 Marks 90 Mins

Detailed Solution

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⇒ 6x2 + 3x2 – 5x + 1

⇒ 9x2 – 5x + 1

a மற்றும் b சமன்பாடுகளின் இரண்டு மூலங்களாக இருக்கட்டும்

நாம் அறிந்தபடி,

மூலங்களின் கூட்டுத்தொகை (α + β) = (-b)/a = 5/9

மூலங்களின் பெருக்கல் (αβ) = c/a = 1/9

கேள்வியின் படி

⇒ 1/α + 1/β

⇒ (α + β)/αβ

⇒ [5/9] / [1/9] = 5

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