Question

Find [f g](x) if g(x) = x + 1 and f(x) = 2x ^ 2 - 5x + 8

Answer 1

Answer:

$2x^{2}$ - x + 5

Step-by-step explanation:

g(x)=x+1

f(x)=$2x^{2}$-5x+8

f∅g(x)=2$(x+1)^{2}$-5(x+1) + 8

= 2($x^{2}$+2x+1) - 5x - 5 + 8

= $2x^{2}$ +4x +2 - 5x +3

=$2x^{2}$ -x +5

:)