Class 9 Exam > Class 9 Questions > The value of the polynomial5x−4x2+3, wh...
Start Learning for Free
The value of the polynomial 5x−4x2+3, when x = −1 is
- a)-6
- b)-1
- c)1
- d)6
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1...
The value of a polynomial obtained on putting a particular value
of the variable is called the value of the polynomial.
The value of a polynomial p(x) at x= a(let) is denoted by p(a).
i)
p(x) = 5x - 4x^2+ 3
On putting x=0 ,
p(0) = 5(0) - 4(0)^2 + 3
= 0 - 0 +3=3
= 3
ii)
(x) = 5x - 4x^2 + 3
On putting x= -1,
p(-1) = 5(-1) - 4(-1)^2+ 3
= -5 - 4(1) + 3
= -5-4+3= -9+3= -6
= -6
iii)
p(x) = 5x - 4x^2 + 3
On putting x=2
p(2) = 5(2) - 4(2)^2+ 3
= 10 – 16 + 3 = -6+3
= -3
Most Upvoted Answer
The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1...
Explanation:
Given polynomial:
The given polynomial is 5x - 4x^2 + 3.
Substitute x = -1:
Substitute x = -1 into the polynomial:
5(-1) - 4(-1)^2 + 3
= -5 - 4(1) + 3
= -5 - 4 + 3
= -6
Conclusion:
Therefore, the value of the polynomial 5x - 4x^2 + 3, when x = -1 is -6. So, option 'A' (-6) is the correct answer.
Given polynomial:
The given polynomial is 5x - 4x^2 + 3.
Substitute x = -1:
Substitute x = -1 into the polynomial:
5(-1) - 4(-1)^2 + 3
= -5 - 4(1) + 3
= -5 - 4 + 3
= -6
Conclusion:
Therefore, the value of the polynomial 5x - 4x^2 + 3, when x = -1 is -6. So, option 'A' (-6) is the correct answer.
Free Test
FREE
| Start Free Test |
Community Answer
The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1...
Let p (x) = 5x – 4x2 + 3 …(i)
On putting x = -1 in Eq. (i), we get
p(-1) = 5(-1) -4(-1)2 + 3= - 5 - 4 + 3 = -6
On putting x = -1 in Eq. (i), we get
p(-1) = 5(-1) -4(-1)2 + 3= - 5 - 4 + 3 = -6
|
Explore Courses for Class 9 exam
|
|
Top Courses for Class 9View all
Question Description
The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer?.
The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer?.
Solutions for The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer?, a detailed solution for The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The value of the polynomial5x−4x2+3, when x = −1isa)-6b)-1c)1d)6Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup