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<html><body><h2 id="content-id-3601928745-2"><b>Algebra Questions Overview</b></h2><p>Algebra Questions have a good weightage in the Rbi Assistant Exam and the type of question asked in Rbi Assistant exam is similar to the question mentioned below. It has been solved and explained by KD Live Experts under the guidance of Neetu Mam and they have tried to elaborate the concept used in Algebra Questions.</p><h2 id="content-id-2731869450-3"><b>Question On Algebra </b></h2>The quadratic equation x2 − (k − 2)x + (k + 1) = 0 has real and equal roots. Find the largest value of k.
<div class="row show--dificulty--bar" style="margin-top:8px;"><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex !important;border-right:0.1px solid #eee;"><h3 style="font-size:12px !important;">Difficulty : Easy </h3></div><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex;"><h3 style="font-size:12px !important;"> Average Time : 32 Seconds </h3></div></div><h2 id="content-id-6381025749-4"><b> Algebra Questions Options</b></h2><ol><li><p>4</p>
</li><li><p>0</p>
</li><li><p>3</p>
</li><li><p>5</p>
</li><li><p>8</p>
</li></ol> <h2 id="content-id-4370512986-5"><b> Algebra Questions Solution</b></h2><p>The correct answer is <strong>option 5 </strong>i.e. <strong>8.</strong></p>

<p>For real and equal roots → D = 0</p>

<p>D = b<sup>2</sup> − 4ac</p>

<p>x<sup>2</sup> − (k − 2)x + (k + 1) = 0</p>

<p>a = 1, b = −(k − 2), c = (k + 1)</p>

<p>⇒ [−(k − 2)]<sup>2</sup> − 4 × 1 × (k + 1) = 0</p>

<p>⇒ (k − 2)<sup>2</sup> − 4(k + 1) = 0</p>

<p>⇒ k<sup>2 </sup>− 4k + 4 − 4k − 4 = 0</p>

<p>⇒ k<sup>2</sup> − 8k = 0</p>

<p>⇒ k(k − 8) = 0</p>

<p>k = 0 or <strong>8</strong></p>
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The correct answer is option 5 i.e. 8.  - Algebra Questions are asked in Rbi Assistant exams and your question has been explained by experts like Neetu Mam.

The quadratic equation x2 - Algebra Questions for Rbi Assistant

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