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    Question

    I. 2p2 + 5p + 2 = 0ย  ย  ย  ย  ย  ย  ย  ย II.

    2q2 + 11 q + 14 = 0 In each question two equations are provided. On the basis of these you have to find out the relation between p and q. Give answer.
    A if p = q Correct Answer Incorrect Answer
    B if p > q Correct Answer Incorrect Answer
    C if q > p Correct Answer Incorrect Answer
    D if p โ‰ฅ q Correct Answer Incorrect Answer
    E if q โ‰ฅ p Correct Answer Incorrect Answer

    Solution

    I. 2p2ย + 5p + 2 = 0 ย  (2p + 1) (p + 2) = 0 ย  p = - (1/2)ย  or -2 ย  II. 2q2ย + 11 q + 14 = 0 ย  (q + 2) (2q + 7) = 0 ย  q = -2 or - (7 /2) ย  Hence, p โ‰ฅ q ย  Alternate Method: ย  if signs of quadratic equation is +ve and +ve respectively then the roots of equation will be -ve and -ve. So, roots of first equation = p = -1/2, -2 if signs of quadratic equation is +ve and +ve respectively then the roots of equation will be -ve and -ve.ย  So, roots of second equation = q = -2, -7/2 After comparing roots of quadratic eqution we can conclude that p โ‰ฅ q.

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