Educational

Making a Given Number a Zero of a Polynomial Video Explanation Question What should be subtracted from the polynomial \[ f(x) = x^2 – 16x + 30 \] so that \(15\) is a zero of the resulting polynomial? Options: (a) 30    (b) 14    (c) 15    (d) 16 Solution Step 1: Use the […]

Making a Given Number a Zero of a Polynomial Video Explanation Question What should be added to the polynomial \[ f(x) = x^2 – 5x + 4 \] so that \(3\) is a zero of the resulting polynomial? Options: (a) 1    (b) 2    (c) 4    (d) 5 Solution Step 1: Use the

Product of Zeroes of a Cubic Polynomial Video Explanation Question The product of the zeroes of the polynomial \[ f(x) = x^3 + 4x^2 + x – 6 \] is: (a) -4    (b) 4    (c) 6    (d) -6 Solution Step 1: Use the Formula for Product of Zeroes For a cubic polynomial

Finding the Third Zero of a Cubic Polynomial Video Explanation Question If two zeroes of the polynomial \[ f(x) = x^3 + x^2 – 5x – 5 \] are \( \sqrt{5} \) and \( -\sqrt{5} \), find its third zero. Options: (a) 1    (b) -1    (c) 2    (d) -2 Solution Step 1:

Finding the Third Zero of a Cubic Polynomial Video Explanation Question If two of the zeroes of the cubic polynomial \[ f(x) = ax^3 + bx^2 + cx + d \] are each equal to zero, find the third zero. Solution Step 1: Use the Product of Zeroes Formula For a cubic polynomial \[ ax^3

Evaluation Using Zeros of a Quadratic Polynomial Video Explanation Question If \( \alpha \) and \( \beta \) are the zeroes of the polynomial \[ f(x) = ax^2 + bx + c, \] find \[ \frac{1}{\alpha^2} + \frac{1}{\beta^2}. \] Solution Step 1: Write Relations Between Zeroes and Coefficients For the quadratic polynomial \(ax^2 + bx

Evaluation Using Zeros of a Cubic Polynomial Video Explanation Question If \( \alpha, \beta, \gamma \) are the zeroes of the polynomial \[ f(x) = x^3 – px^2 + qx – r, \] find \[ \frac{1}{\alpha\beta} + \frac{1}{\beta\gamma} + \frac{1}{\gamma\alpha}. \] Solution Step 1: Write Relations Between Zeroes and Coefficients For the cubic polynomial \(x^3

Evaluation Using Zeros of a Cubic Polynomial Video Explanation Question If \( \alpha, \beta, \gamma \) are the zeroes of the polynomial \[ f(x) = ax^3 + bx^2 + cx + d, \] find \[ \alpha^2 + \beta^2 + \gamma^2. \] Solution Step 1: Write Relations Between Zeroes and Coefficients For the cubic polynomial \(

Evaluation Using Zeros of a Cubic Polynomial Video Explanation Question If \( \alpha, \beta, \gamma \) are the zeroes of the polynomial \[ f(x) = ax^3 + bx^2 + cx + d, \] find \[ \frac{1}{\alpha} + \frac{1}{\beta} + \frac{1}{\gamma}. \] Solution Step 1: Write Relations Between Zeroes and Coefficients For the cubic polynomial \(ax^3

Condition for Reciprocal Zeroes of a Quadratic Polynomial Video Explanation Question If one root of the polynomial \[ f(x) = 5x^2 + 13x + k \] is the reciprocal of the other, find the value of \(k\). Solution Step 1: Use the Condition for Reciprocal Roots If the roots \( \alpha \) and \( \beta