Question

May anyone help?? i didnt score correct also can someone please correct me

Answer 1

`\longrightarrow f( \rm x) = (x - 4)(x + 4)`

`\\ \\`

`\longrightarrow f( \rm x) = {(x)}^(2) - {(4)}^(2)`

`\\ \\`

`\longrightarrow f( \rm x) = {x}^(2) - 16`

Formula used = (a + b) (a - b) = a² - b²