Share
Notifications

View all notifications
Advertisement

Write the Discriminant of the Following Quadratic Equations: X2 - 2x + K = 0, K ∈ R - Mathematics

Login
Create free account


      Forgot password?

Question

Write the discriminant of the following quadratic equations:

x2 - 2x + k = 0, k ∈ R

Solution

We have been given, x2 - 2x + k = 0

Now we also know that for an equation ax2 + bx + c = 0, the discriminant is given by the following equation:

D = b2 - 4ac

Now, according to the equation given to us, we have,a = 1, b = -2 and c = k.

Therefore, the discriminant is given as,

D = (-2)2 - 4(1)(k)

= 4 - 4k

Therefore, the discriminant of the equation is 4 - 4k.

  Is there an error in this question or solution?
Advertisement

APPEARS IN

 RD Sharma Solution for Class 10 Maths (2018 (Latest))
Chapter 4: Quadratic Equations
Ex. 4.5 | Q: 1.4 | Page no. 32
 RD Sharma Solution for Class 10 Maths (2018 (Latest))
Chapter 4: Quadratic Equations
Ex. 4.5 | Q: 1.4 | Page no. 32
Advertisement
Write the Discriminant of the Following Quadratic Equations: X2 - 2x + K = 0, K ∈ R Concept: Relationship Between Discriminant and Nature of Roots.
Advertisement
View in app×