Question 8

Mathematics Linear and Quadratic Equations Easy

If (x-1) is a factor of \( 2x^2-5x+k=0\), then the value of k is:

(A) 2
(B) 5
(C) 3
(D) 4
✓ Correct Answer: Option C Verified Solution

📘 Step-by-Step Solution & Detailed Explanation:

Explanation:

We are given that (x - 1) is a factor of: \[ 2x^2 - 5x + k = 0 \]

By the Factor Theorem, if (x - 1) is a factor, then substituting \(x = 1\) into the polynomial must make it equal to 0.

\[ P(x) = 2x^2 - 5x + k \] \[ P(1) = 2(1)^2 - 5(1) + k = 0 \]

Simplify: \[ 2 - 5 + k = 0 \] \[ -3 + k = 0 \quad \Rightarrow \quad k = 3 \]

Hence, the correct value of \(k\) is:

(C) 3

Practice Similar Linear and Quadratic Equations Questions

Reinforce your conceptual grasp with related questions from CUET-MCA 2025:

Q54 If \( x=(2+√(3)) 1/3 +(2+√(3)) -1/3 \) and \(x 3 -3x+k=0\), then the value...
Solve →
Q2 If \( x 2 =-16y \) is an equation of parabola then: (A) & directrix is y=4...
Solve →
Q3 From the given sets, which is an infinite set: (a) & \ x : x ∈ N and...
Solve →
Q6 The points (K,2-2K), (-K+1,2K) and (-4-K,6-2K) are collinear if (A) \(...
Solve →
Q10 The center and radius for the circle \( x 2 +y 2 +6x-4y+4=0\) respectively...
Solve →
Full-Length Test Series

Prepare for CUET-MCA Under Real Exam Conditions

Take timed full-length mock tests with authentic question distributions, negative marking (+12/-3 in Math), and instant All India Rank calculation.

Start Free Mock Test Series →