Question

(x+2)! / x!
………………….

Answer 1

$\large \sf \dfrac{(x+2)!}{x!}$

n! = n × (n-1)!

$\large \sf \dfrac{(x+2)\times (x+1) \times x!}{x!}$

$\large \sf (x+2) \times (x+1) = x \times x + x + 2 \times x + 2$

$\large \sf x^2+x+2x+2=x^2+3x+2$