Answer :
4x + x - 2x² + x - 1
= 6x - 2x² - 1
x = - 1
6 * (- 1) -2 * (- 1)² - 1
- 6 - 2 * 1 - 1
- 9
The answer is - 9.
= 6x - 2x² - 1
x = - 1
6 * (- 1) -2 * (- 1)² - 1
- 6 - 2 * 1 - 1
- 9
The answer is - 9.
Answer:
- 9
Step-by-step explanation:
Given expression is
[tex]4x + x - 2x^{2} + x - 1[/tex]
First of all we need to simplify this expression
[tex]4x + x - 2x^{2} + x - 1[/tex]
[tex]- 2x^{2} + 6x - 1[/tex]
Now taking (-) common fron each terms
[tex]- (2x^{2} - 6x + 1)[/tex]
Given, when x = - 1
[tex]-[2(-1)^{2} - 6(-1) + 1][/tex]
= - [ 2 + 6 +1 ]
= - 9 (Answer)