CAT Polynomials & Roots of Equations Questions

The equations $3x^2 - 5x + p = 0$ and $2x^2 - 2x + q = 0$ have one common root. The sum of the other roots of these two equations is

The number of non-negative integer values of $k$ for which the quadratic equation $x^2 - 5x + k = 0$ has only integer roots, is

If the equations $x^2 + mx + 9 = 0 , x^2 + nx + 17 = 0$ , and $x^2 + (m + n)x + 35 = 0$ have a common negative root, then the value of $2m + 3n$ is

The roots $\alpha, \beta$ of the equation $3x^{2} + \lambda x-1=0$ , satisfy $\frac{1}{\alpha^{2}}+\frac{1}{\beta^{2}}=15$. The value of $\left(\alpha^{3} + \beta^{3}\right)^{2}$ , is

If $x$ and $y$ are real numbers such that $4x^2 + 4y^2 - 4xy - 6y + 3 = 0$ , then the value of $(4x + 5y)$ is

Let $\alpha$ and $\beta$ be the two distinct roots of the equation $2x^2 - 6x + k = 0$ , such that $(\alpha + \beta)$ and $\alpha \beta$ are the distinct roots of the equation $x^2 + px + p = 0$. Then, the value of $8 (k - p)$ is

The equation $x^3 + (2r + 1)x^2 + (4r - 1)x + 2 = 0$ has $- 2$ as one of the roots. If the other two roots are real, then the minimum possible non-negative integer value of $r$ is

If $f(x)=(x^2+3x)(x^2+3x+2)$ , then the sum of all real roots of the equation $\sqrt{f(x)+1}=9701$ , is

A quadratic equation $x^{2}+b x+c=0$ has two real roots. It the difference between the reciprocals of the roots is $1 / 3$ and the sum of the reciprocals of the squares of the roots is $5 / 9$ , then the largest possible value of (b+c) is

Let $a, b, c$ be non-zero real numbers such that $b^2 < 4ac$ , and $f(x) = ax^2 + bx + c$. If the set S consists of all integers m such that $f(m) < 0$ , then the set S must necessarily

Let $f(x)$ be quadratic polynomial in $x$ such that $f(x) \geq 0$ for all real numbers $x$. if $f(2)=0$ and $f(4)=6$ , then $f(-2)$ is equal to

Let $r$ and $c$ be real numbers, if $r$ and $- r$ are roots of $5x^{3} + c$ $x^{2} - 10 x+9=0$ , then $c$ equals

Suppose $k$ is any integer such that the equation $2x^{2} + k x+5=0$ has no real roots and the equation $x^{2}+(k-5) x+1=0$ has two distinct real roots for $x$. Then, the number of possible values of $k$ is

If $(3+2\sqrt{2})$ is a root of the equation $ax^2 + bx + c = 0$ , and $(4+2\sqrt{3})$ is a root of the equation $ay^2 + my + n = 0$ , where $a, b, c, m$ and $n$ are integers, then the value of $(\frac{b}{m} + \frac{c-2b}{n})$ is

Suppose one of the roots of the equation $ax^2 - bx + c = 0$ is $2+\sqrt{3}$ where a, b and c are rational numbers and $a \neq 0$. If $b = c^3$ then $|a|$ equals

A tea shop offers tea in cups of three different sizes. The product of the prices, in INR, of three different sizes is equal to $800$. The prices of the smallest size and the medium size are in the ratio $2 : 5$. If the shop owner decides to increase the prices of the smallest and the medium ones by INR 6 keeping the price of the largest size unchanged, the product then changes to $3200.$ The sum of the original prices of three different sizes, in INR, is:

The number of distinct real roots of the equation(x + $\frac{1}{x})^2 - 3(x + \frac{1}{x}$) + $2 = 0$ equals

Let $f(x)= x^{2} + a x+b$ and $g(x)=f(x+1)-f(x-1)$. If $f(x) \geq 0$ for all real $x$ , and $g(20)=72$ , then the smallest possible value of $b$ is

Let $m$ and $n$ be positive integers, If $x^2 + mx + 2n = 0$ and $x^2 + 2nx + m = 0$ have real roots, then the smallest possible value of $m + n$ is

The quadratic equation $x² + bx + c = 0$ has two roots $4a$ and $3a,$ where a is an integer. Which of the following is a possible value of $b² + c$?

Let $A$ be a real number. Then the roots of the equation $x^2 - 4x - \log_2A = 0$ are real and distinct if and only if

If $f_{1}(x)= x^{2} + 11 x+n$ and $f_{2}(x)=x$ , then the largest positive integer $n$ for which the equation $f_{1}(x)=f_{2}(x)$ has two distinct real roots, is