Practice problem
Let f(x)=4x2+1f(x) = 4x^2 + 1f(x)=4x2+1 and g(x)=x2+xg(x) = x^2 + xg(x)=x2+x. What is (f+g)(x)(f+g)(x)(f+g)(x)?
5x2+x+15x^2 + x + 15x2+x+1
4x2+x+24x^2 + x + 24x2+x+2
5x2+25x^2 + 25x2+2
4x2+x4x^2 + x4x2+x
Type a concept, like “slope” or “photosynthesis”.
