Question

Given that fx=2x2-4x+1, then f(-1)is.​

Answer 1

`f(-1)=7`

Explanation:

I am going to assume your question meant the equation

`f(x)=2x^(2) -4x+1`

So
`f(-1)` can be found by substituting all the x terms in the equation with -1

`f(-1)=2(-1)^(2) -4(-1)+1`

And simplifying for our answer

`f(-1)=2(1)+4+1`

`f(-1) = 2+4+1`

`f(-1)=7`