Math, asked by Neelimma7694, 1 year ago

Evaluate 2x³-x-4 when x=-1

Answers

Answered by cuteyashraj10
1

X= -1 = 0

=1


2x^3-1-4

=2*1^3-1-4

= 2-1-4

=(-1) -4

=(-5)


Answered by mohammadsahil98
1
When
x =  - 1 .............(1)
In this equation,,
 {2x}^{3}   - x - 4
From 1, we get
2( - 1) ^{3}  - ( - 1) - 4
  = - 2 + 1 - 4 \\   =  - 5
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