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8. If a and b are integers such that 2x² −ax + 2 more than 0 and x² −bx + 8 more than equal 0 for all real numbers x, then the largest possible value of 2a−6b is

9. If x2 + 1 = 3x, then the value of ((x^4+x^(-2) ))/((x^2+5x+1) ) is:

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14 Comments

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  1. Piyush Thakur 2 years ago

    Sir Mai apne doubt kis no par send karu

  2. DEVIL 2 years ago

    A=6,b=-30,,,, a-6=6,or a-6b=192
    Chsl walw me 194/5

  3. vishnu swami 2 years ago

    14
    & 194/5

  4. Rohit bisht 2 years ago

    Ssc math ke course me live pdhaoge kya ya purani videos aur sir doubt session

  5. DADLEO 2 years ago

    Q. 1 14
    Q. 2 194/2

  6. Vinod Kumar Yadav 2 years ago

    14 & 194/5

  7. Krupasindhu Dharua 2 years ago

    Do you have online paid course for SSC.

  8. ankit baswal 2 years ago

    -12✓3<a<12✓3, -30<b<30, a-6 max will be 14 and second one is 194/5

  9. manish bhati 2 years ago

    Sir, how can we take D<0 . It will give us imaginary roots. But it is clearly mentioned in Q that for all real x.
    (In the 1st CAT question)

  10. manish bhati 2 years ago

    1. a < 21 and -30 <= b <= 30
    Hence, a-6 = 14; a-b = 50
    2. 194/5

  11. 17
    194÷5

  12. surajit Halder 2 years ago

    13……..194/5

  13. Jadaun Thakur 2 years ago

    thank u sir

  14. Satyam Kumar 2 years ago

    1) 14.76
    2) 194/5

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