JEE Exam Prep
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Questions and Answers

Which one of these is the value of $a$ in the equation $x^3 + ax^2 + b = 0$ if it has a double root?

  • $27a + 4b^3 = 0$
  • $4a + 27b^3 = 0$ (correct)
  • $4a^3 + 27b = 0$
  • None of these
  • If the equation $(x - a)(x - 10) + 1 = 0$ has integral roots, what are the possible values of $a$?

  • 8, 10 (correct)
  • 10, 12
  • None of these
  • 12, 8
  • What is the other root of the equation $ix^2 - 2(i + 1)x + (2 - i) = 0$ if one root is $2 - i$?

  • $i$
  • $2 - i$
  • $-i$ (correct)
  • $2 + i$
  • How many solutions does the equation $(\sin(ex))^2 = 5x + 5^{-x}$ have?

    <p>2</p> Signup and view all the answers

    For which values of $k$ does the equation $3x^2 + 2x(k + 1) + (k^2 - 3k + 2) = 0$ have roots of opposite signs?

    <p>$k &gt; 2$</p> Signup and view all the answers

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