Question

let g(x)=3x^2+2x+4 find g(p+2)

Answer 1

$g(x) = 3 {x}^{2} + 2x + 4$
$g(p + 2) = 3 {(p + 2)}^{2} + 2(p + 2) + 4$
$g(p + 2) = 3( {p}^{2} + 4p + 4) + 4p + 4 + 4$
$g(p + 2) = 3{p}^{2} + 12p + 12+ 4p + 8$
$g(p + 2) = 3{p}^{2} + 16p + 20$