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  • Question
  • In the question, two equations I and II are given. You have to solve both the equations and give answer x2-11x+28=0y2-18y+81=0


  • Options
  • A. x > y
  • B. x < y
  • C. x=y, or relation cannot be established between x and y
  • D. x ? y

  • Correct Answer
  • x < y 

    Explanation

    x2 ? 11x + 28=0

    x2 ? 7x ? 4x + 28=0

    x (x-7) ? 4 (x-7)=0

    (x-4) (x-7)=0 x=4, 7

    y2 ? 18y + 81=0

    y2 ?9y ? 9y + 81=0

    y (y-9) ? 9 (y-9)=0

    (y-9) (y-9)=0 y=9, 9

    So, x<y.


  • Simplification problems


    Search Results


    • 1. 3x2-14x+16=05y2-16y+12=0

    • Options
    • A. x > y
    • B. x < y
    • C. x=y or relation cannot be established between x and y
    • D. x ? y
    • Discuss
    • 2. In each of these questions, two equations (I) and (II) are given. I. 2x2+19x+42 = 0II. 4y2+43y+30 = 0

    • Options
    • A. x > y
    • B. x < y
    • C. x ? y
    • D. x ? y
    • Discuss
    • 3. In each of the following questions two equations I and II are given. Solve both the equations and give answer: I. x2+2x-195=0II. y2+30y+225=0

    • Options
    • A. x = y or relation can?t be established between x and y
    • B. x > y
    • C. x < y
    • D. x ? y
    • Discuss
    • 4. In the question given below, two equations are provided. Solve the equations and establish the relationship between x and y I. 2x2-13x-189=0 II. 2y2-3y-189=0

    • Options
    • A. x>y
    • B. x?y
    • C. x
    • D. x?y
    • Discuss
    • 5. What should come in place of question mark (?) in the following question? 65% × 700 + ?196 ? 9 × 3 = ?

    • Options
    • A. 522
    • B. 442
    • C. 402
    • D. 362
    • Discuss
    • 6. What should come in place of question mark (?) in the following question? 115 ÷ 5 + 12 × 6 = ? + 64 ÷ 4 - 35

    • Options
    • A. 95
    • B. 136
    • C. 102
    • D. 74
    • Discuss
    • 7. What should come in place of question mark (?) in the following question? 1234 + 2345 ? 3456 + 4567 = ?

    • Options
    • A. 4590
    • B. 4680
    • C. 4670
    • D. 4690
    • Discuss
    • 8. What is the y ? intercept of the linear equation 59x + 14y ? 112 = 0?

    • Options
    • A. 8
    • B. 14
    • C. 28
    • D. 59
    • Discuss
    • 9. What is the value of (sin60° + 2/?3) ?

    • Options
    • A. (2?3+1)/?3
    • B. 7/2?3
    • C. 3
    • D. 2+?3
    • Discuss
    • 10. Solve the following equation to find x: (x ? 2)2 ? 36 = 0 : x?N

    • Options
    • A. 4
    • B. 8
    • C. -4
    • D. -8
    • Discuss


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