If f(x)=3x^(2)-4, find f(-3)

Question

If f(x)=3
`x^(2)`-4, find f(-3)

Answer 1

`\sf f(-3) = 23`

given:

`\sf f(x) = 3x^2 -4`

to find the output, replace x with the given integer.

solve:

`\sf f(-3) = 3(-3)^2 -4`

`\sf f(-3) = 3(9) -4`

`\sf f(-3) = 27 -4`

`\sf f(-3) = 23`