Question

Please help!!! If...........

Answer 1

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

Putting f(x) = -1.

`f(x) = 2 {( - 1)}^(2) + 3( - 1) - 1`

`f(x) = 2 (1) - 3 - 1`

`f(x) = 2 - 3 - 1`

`f(x) = - 1 - 1`

`f(x) = - 2`

For g(x) put as -1

`g(x) = - ( - 1)`

`g(x) = 1`

Last step,

-2 + 1 = -1

So, option ( a) is correct

Answer 2

-1

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