### Home > PC > Chapter 2 > Lesson 2.1.1 > Problem2-9

2-9.

If $f(x)=3x^2+5x-2$, show that $f(x+h)=3x^2+x(6h+5)+(3h^2+5h-2)$

Substitute $(x+h)$ for every $x$ in $f(x)$.