Question

Given f(x) = 2x2 - 2x - 4, find f(3).

Answer 1

`{ \qquad\qquad\huge\underline{{\sf Answer}}}`

Let's solve ~

`\qquad \sf  \dashrightarrow \: f(x) = 2 {x}^(2) - 2x - 4`

`\qquad \sf  \dashrightarrow \: f(3) = 2(3) {}^(2) - 2(3) - 4`

`\qquad \sf  \dashrightarrow \: f(3) = 2(9) {} - 6- 4`

`\qquad \sf  \dashrightarrow \: f(3) = 18{} - 10`

`\qquad \sf  \dashrightarrow \: f(3) = 8`