Given #f(x) = x +2# and #g(x)= 2x^2-4x+2#, how do you find #f(x)+g(x)#? Algebra Expressions, Equations, and Functions Function Notation 1 Answer Konstantinos Michailidis Feb 18, 2016 #f+g=2x^2-3x+4# Explanation: Hence the domain of #Df=R# and #Dg=R# where R is the set of real numbers the sum of the two functions is defined which means it exists in real numbers.Hence the sum is #f+g=x+2+(2x^2-4x+2)=2x^2-3x+4# Answer link Related questions How do you find the output of the function #y=3x-8# if the input is -2? What does #f(x)=y# mean? How do you write the total cost of oranges in function notation, if each orange cost $3? How do you rewrite #s=2t+6# in function notation? How do you find the value of #f(-9)# for #f(x)=x^2+2#? What does a dependent and independent variable mean? What is the difference between an equation written in function notation and one that is not? How do you evaluate function notation? What is Function Notation? How do you write equations in function notation? See all questions in Function Notation Impact of this question 4355 views around the world You can reuse this answer Creative Commons License