All Categories Alerts Wishlist Cart

If the roots of the equation x^2 + 4x + k = 0 are equal, what is the value of k?

Practice Questions

1 question
Q1
If the roots of the equation x^2 + 4x + k = 0 are equal, what is the value of k?
  1. 4
  2. 8
  3. 16
  4. 0

Questions & Step-by-step Solutions

1 item
Q
Q: If the roots of the equation x^2 + 4x + k = 0 are equal, what is the value of k?
Solution: For the roots to be equal, the discriminant must be zero. Thus, 4^2 - 4*1*k = 0 leads to k = 4.
Steps: 0

Related Questions

I
If a + b = 12 and a^2 + b^2 = 70, what is the value of ab? (2019)
Question: If a + b = 12 and a^2 + b^2 = 70, what is the value of ab? (2019)Options: 20222425Correct ..
I
If the roots of the equation x^2 + 5x + 6 = 0 are a and b, what is the value of
Question: If the roots of the equation x^2 + 5x + 6 = 0 are a and b, what is the value of ab? (2023)..
I
If the ratio of the ages of A and B is 3:4 and the sum of their ages is 28 years
Question: If the ratio of the ages of A and B is 3:4 and the sum of their ages is 28 years, what is ..
I
If the quadratic equation x^2 + px + q = 0 has roots 3 and 4, what is the value
Question: If the quadratic equation x^2 + px + q = 0 has roots 3 and 4, what is the value of p + q? ..
F
For the equation x^3 - 6x^2 + 11x - 6 = 0, what is the product of the roots? (20
Question: For the equation x^3 - 6x^2 + 11x - 6 = 0, what is the product of the roots? (2019)Options..
Biology (School & UG)
Biology (School & UG)
Chemistry (School & UG)
Chemistry (School & UG)
Civil Engineering
Civil Engineering
Commerce & Accountancy
Commerce & Accountancy
Computer Science & IT
Computer Science & IT
Current Affairs & GK
Current Affairs & GK
Data Structures & Algorithms
Data Structures & Algorithms
Electrical & Electronics Engineering
Electrical & Electronics Engineering
English (School)
English (School)
General Aptitude
General Aptitude
General Knowledge
General Knowledge
General Knowledge & Current Affairs
General Knowledge & Current Affairs
Languages & Literature
Languages & Literature
Law & Legal Studies
Law & Legal Studies
Major Competitive Exams
Major Competitive Exams
Mathematics (School)
Mathematics (School)
Mechanical Engineering
Mechanical Engineering
Medical Science
Medical Science
Physics (School & Undergraduate)
Physics (School & Undergraduate)
Quantitative Aptitude & Reasoning
Quantitative Aptitude & Reasoning
Social Science (School)
Social Science (School)
Technical
Technical
Verbal and Reasoning
Verbal and Reasoning
Vocational & Skill Development
Vocational & Skill Development
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely