Practice problem
If f(x)=x2+2f(x)=x^2+2f(x)=x2+2 and g(x)=3x+5g(x)=3x+5g(x)=3x+5 then what is (f+g)(x)(f+g)(x)(f+g)(x)?
x2+3x+7x^2+3x+7x2+3x+7
−x2−3x−3-x^2-3x-3−x2−3x−3
3x3+5x2+6x+103x^3+5x^2+6x+103x3+5x2+6x+10
3x+253x+\frac253x+52
Type a concept, like “slope” or “photosynthesis”.
