If $p$ and $q$ are distinct prime numbers and the equation $x^2 - px + q = 0$ has positive integers as its roots,then the roots of the equation are:

  • A
    $1, -1$
  • B
    $2, 3$
  • C
    $1, 2$
  • D
    $3, 1$

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If $|{x^2} - x - 6| = x + 2$,then the values of $x$ are

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Let $b$ be a non-zero real number. Suppose the quadratic equation $2x^2 + bx + \frac{1}{b} = 0$ has two distinct real roots. Then:

Let $p(x) = x^2 - 5x + a$ and $q(x) = x^2 - 3x + b$,where $a$ and $b$ are positive integers. Suppose $\text{HCF}(p(x), q(x)) = x - 1$ and $k(x) = \text{LCM}(p(x), q(x))$. If the coefficient of the highest degree term of $k(x)$ is $1$,then the sum of the roots of $(x - 1) + k(x)$ is:

The roots of $ax^2 + b = 0$ are real and distinct if:

Let $\alpha$ and $\beta$ be the roots of the quadratic equation $a x^2+b x+c=0$. Observe the lists given below:
List-$I$List-$II$
$(i)$ $\alpha = \beta$$(A)$ $(ac^2)^{1/3} + (a^2c)^{1/3} + b = 0$
$(ii)$ $\alpha = 2\beta$$(B)$ $2b^2 = 9ac$
$(iii)$ $\alpha = 3\beta$$(C)$ $b^2 = 6ac$
$(iv)$ $\alpha = \beta^2$$(D)$ $3b^2 = 16ac$
$(E)$ $b^2 = 4ac$
$(F)$ $(ac^2)^{1/3} + (a^2c)^{1/3} = b$

The correct match of List-$I$ from List-$II$ is:

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