Question

Evaluate the expression below when x = -1. 2x2 - 5 x + 9 A. -7 8 B. -3 8 C. -1 8 D. -1

Answer 1

B -3/8

Explanation:

Because if x = -1 than it wou;d be

2(-1^2) − 5 = 2(1) -5 = 2-5 = -3

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-1 + 9 = 8

Answer 2

Explanation:

Given,

x=-1

And the expression is-

`2x^(2) -5x+9`

Plugging in x=-1 we get

`2x^(2) -5x+9`

=
`2(-1)^(2) -5(-1)+9`

=2(1)+5+9

=2+14

=16

Answer should be 16 here.

Could you write the expression again please?