Multiple Choice Questions on One number is 3 more than another and the sum of their square is 269 Find the number ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

One number is 3 more than another and the sum of their square is 269 Find the number ........

Quantitative Aptitude ( CCS) Number System
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    One number is 3 more than another and the sum of their square is 269.Find the number.

    10

    Correct Answer

    12

    Incorrect Answer

    15

    Incorrect Answer

    20

    Incorrect Answer
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    Explanation:

    x is one number
    x+3 the other
    x^2 +x^2 +6x+9 ; (that is (x+3)(x+3) =269
    2x^2+6x -260=0
    x^2+3x-130=0 , dividing by 2.
    (x+13)(x-10)=0
    one number is 10, the other is 13
    squared 10=100
    square 13=169
    sum is 269

    By: Amit Kumar
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