2. Verify whether x=-1/2 is the zero of the polynomial g(x)=2x+x-1
Answers
Answered by
25
Answer:
Given:
We have been given a polynomial
g(x) = 2x^2 + x -1
To Verify:
We need to verify whether x = -1/2 is the zero of the given polynomial or not.
Solution:
We have been given a polynomial 2x^2 + x -1,
Inorder to verify is x = -1/2 its zero or not we need to substitute the value of x in 2x^2 + x -1.
We get,
2 × (-1/2)^2 + (-1/2) -1
=> 2 × 1/4 - 1/2 -1
=> 1/2 - 1/2 -1
=> 0 - 1
= -1
-1 is not equal to zero, hence -1/2 is not the zero of 2x^2 + x -1.
Answered by
1
Answer:
-1 is not equal to zero.
-1/2 is not zero of 2x² + x - 1.
- We have been given a polynomial g(x) = 2x² + x - 1
- We need to verify x = -1/2 is the zero of the polynomial and not.
- We have been a given polynomial 2x² + 2 - 1 = 0.
- As a fact of x = -1/2.
Now, substitution the value of x in 2x² + x - 1
2x² + x - 1 = 0
2(-1/2)² + (-1/2) - 1 = 0
2(1/4) - 1/2 - 1 = 0
2 × 1/4 - 1/2 - 1 = 0
1/2 - 1/2 - 1 = 0
-1 = 0
Thus, -1 is not equal to zero.
Hence, -1/2 is not zero of 2x² + x - 1.
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