Question

(11) 4x
111)-2
Simplify and find the value of 4x + x - 2x² + x-1 when x= -1.
lified form. Find its value​

Answer 1

Step-by-step explanation:

$4x + x - 2 {x}^{2} + x - 1 \\ 4x + x + x - 2 {x}^{2} - 1 \\ 6x - {2x}^{2} - 1 \\ \\ 6( - 1) - 2 {( - 1)}^{2} - 1 \\ = - 6 - 2 - 1 \\ = - 8 - 1 \\ = - 9$

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