Question

Given the function f(x)=3x^2-2, what is the value of f(-3)?

Answer 1

Just plug in -3, in the function

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

That is;



`f( - 3) = 3( - 3) {}^(2) - 2`

`f( - 3) = 3(9) - 2`

`f( - 3) = 27 - 2`

`f( - 3) = 25`