Respuesta :

mrtutor23

Answer:

-1

Step-by-step explanation:

Simply plug in (-1) to both equations and add.

Equation 1:

2(-1)^2 = 2

3(-1) = -3

2 + -3 - 1 = -2

Equation 2:

-( - 1) = 1

Add both together:

-2 + 1 = -1

DavidCopperfield

Answer:

The equation is 2x² + 3x - 1 and here f(x) is -1

Putting f(x) = -1.

[tex]f(x) = 2 {( - 1)}^{2} + 3( - 1) - 1[/tex]

[tex]f(x) = 2 (1) - 3 - 1[/tex]

[tex]f(x) = 2 - 3 - 1[/tex]

[tex]f(x) = - 1 - 1[/tex]

[tex]f(x) = - 2[/tex]

For g(x) put as -1

[tex]g(x) = - ( - 1)[/tex]

[tex]g(x) = 1[/tex]

Last step,

-2 + 1 = -1

So, option ( a) is correct

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