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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-6

  • question_answer
    \[\left( \frac{{{x}^{2}}-7x+12}{{{x}^{2}}-9x+20} \right)\] in lowest form is

    A)  \[\frac{x-3}{x-4}\]        

    B)   \[\frac{x-5}{x-3}\]

    C)  \[\frac{x-3}{x-4}\]        

    D)              None of these

    Correct Answer: A

    Solution :

    \[\because \] Expression \[=\left[ \frac{{{x}^{2}}-7x+12}{{{x}^{2}}-9x+20} \right]\] \[=\frac{(x-3)(x-4)}{(x-4)(x-5)}\] \[\therefore \,\] Lowest form in expression \[=\frac{(x-3)}{(x-5)}\]


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