aliensbrain
  • Home
  • Study
  • Quizzes
  • 🎤AI Practicefree
  • Notebooks
  • Community
  • Sign in
Multiple choice

If one root of the equations $2x^{2}+ax+3=0$ is 1 find the value of a.

  1. = -4

  2. = -5

  3. = -3

  4. = -1

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Since 1 is a root, substitute x = 1 into 2x^2 + ax + 3 = 0. This gives 2 + a + 3 = 0, so a = -5.

Keep practicing — related questions

  • Which of the following are not the uses of a magnetic compass? (1) To find direction (2) To find the direct...
  • At which of the following sites do we find Fast Breeder Test Reactor(s) in India? 1. Kalpakkam 2. Tarapur 3...
  • Name the stage of cell cycle at which the following events occurs. 1. Chromosomes are moved to spindle equa...
  • Which two statements are equivalent? 1. 3/2 2. 3<2 3. 3*4 4. 3<<2
  • Which two statements are equivalent? 1. 16*4 2. 16>>2 3. 16/2^2 4. 16>>>2
  • Consider the following statements: 1. Saw dust is a bad conductor of heat. 2. Water at 0o C feels colder th...
  • A, B and C were partners sharing profits in the ratio 5 : 4 : 1. 'A' retired and new ratio was decided as 3...
  • Tony has a box of apples. How many apples are in the box, 1. if he gave the apples to 7 friends equally? Th...

Practice this chapter

  • Algebra (3715 questions)
Advertisement
© Aliensbrain | all rights reserved
  • About
  • Contact
  • Terms and Condition
  • Privacy Policy