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<html><body><h2 id="content-id-6930527841-2"><b>Algebra Questions Overview</b></h2><p>Algebra Questions have a good weightage in the Ssc Cgl Exam and the type of question asked in Ssc Cgl 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-3572614809-3"><b>Question On Algebra </b></h2>If x + y = 4, and ({1over x}+{1over y} = {16over15}), then what is the value of (x3 + y3)?  
(CGL 2020 Pre) 
<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-3260589147-4"><b> Algebra Questions Options</b></h2><ol><li><p>18</p>
</li><li><p>19</p>
</li><li><p>21</p>
</li><li><p>16</p>
</li></ol> <h2 id="content-id-1387926045-5"><b> Algebra Questions Solution</b></h2><p>The correct answer is <strong>Option</strong> <strong>2</strong> i.e. <strong>19</strong>.</p>

<p>x + y = 4, and <span class="math-tex">\({1\over x}+{1\over y} = {16\over15}\)</span></p>

<p><span class="math-tex">\({x+y\over xy} = {16\over15}\)</span></p>

<p>xy = <span class="math-tex">\(15\over4\)</span></p>

<p>x<sup>3</sup> + y<sup>3</sup> = (x + y)[(x + y)<sup>2</sup> - 3xy]</p>

<p>⇒ 4[16 - <span class="math-tex">\(45\over4\)</span>]</p>

<p>⇒ 4 × <span class="math-tex">\(19\over4\)</span> = 19</p>
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The correct answer is Option 2 i.e. 19 - Algebra Questions are asked in Ssc Cgl exams and your question has been explained by experts like Neetu Mam.

If x y 4 and 1over - Algebra Questions for Ssc Cgl

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