## Algebra: A Combined Approach (4th Edition)

$(f\circ g)(x)=x^2+2x-1$
Functions involved: $f(x)=x^2-2$ $g(x)=x+1$ Substitute $g(x)$ into $f(x)$: $(f\circ g)(x)=(x+1)^2-2$ Expand: $(f\circ g)(x)=x^2+2x+1-2$ Simplify: $(f\circ g)(x)=x^2+2x-1$