Question

Given ​f(x)=x2−5x−5​, find ​f(4​).

Answer 1

f(4)= -9

Explanation:

to solve you need to substitute for what is given, in this case f of x, x=4

f(4)= 4^2−5(4)−5​

then solve as normal

f(4)= -9

Answer 2

f(4) = -9

Explanation:

The question is asking us to find f(4).

We're given that:

`\sf{f(x)=x^2-5x-5}`. Let's find f(4) by plugging in 4 for x:

`\sf{f(4)=4^2-5(4)-5}`

`\sf{f(4)=16-20-5}`

`\sf{f(4)=-4-5}`

`\sf{f(4)=-9}`

Therefore, f(4) = -9.